Solution - Adding, subtracting and finding the least common multiple
Step by Step Solution
Reformatting the input :
Changes made to your input should not affect the solution:
(1): "7.1" was replaced by "(71/10)".
Rearrange:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
(71/10)/23-(x/92)=0
Step by step solution :
Step 1 :
x
Simplify ——
92
Equation at the end of step 1 :
71 x
—— ÷ 23 - —— = 0
10 92
Step 2 :
71
Simplify ——
10
Equation at the end of step 2 :
71 x
—— ÷ 23 - —— = 0
10 92
Step 3 :
71
Divide —— by 23
10
Equation at the end of step 3 :
71 x
——— - —— = 0
230 92
Step 4 :
Calculating the Least Common Multiple :
4.1 Find the Least Common Multiple
The left denominator is : 230
The right denominator is : 92
| Prime Factor | Left Denominator | Right Denominator | L.C.M = Max {Left,Right} |
|---|---|---|---|
| 2 | 1 | 2 | 2 |
| 5 | 1 | 0 | 1 |
| 23 | 1 | 1 | 1 |
| Product of all Prime Factors | 230 | 92 | 460 |
Least Common Multiple:
460
Calculating Multipliers :
4.2 Calculate multipliers for the two fractions
Denote the Least Common Multiple by L.C.M
Denote the Left Multiplier by Left_M
Denote the Right Multiplier by Right_M
Denote the Left Deniminator by L_Deno
Denote the Right Multiplier by R_Deno
Left_M = L.C.M / L_Deno = 2
Right_M = L.C.M / R_Deno = 5
Making Equivalent Fractions :
4.3 Rewrite the two fractions into equivalent fractions
Two fractions are called equivalent if they have the same numeric value.
For example : 1/2 and 2/4 are equivalent, y/(y+1)2 and (y2+y)/(y+1)3 are equivalent as well.
To calculate equivalent fraction , multiply the Numerator of each fraction, by its respective Multiplier.
L. Mult. • L. Num. 71 • 2 —————————————————— = —————— L.C.M 460 R. Mult. • R. Num. x • 5 —————————————————— = ————— L.C.M 460
Adding fractions that have a common denominator :
4.4 Adding up the two equivalent fractions
Add the two equivalent fractions which now have a common denominator
Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:
71 • 2 - (x • 5) 142 - 5x
———————————————— = ————————
460 460
Equation at the end of step 4 :
142 - 5x
———————— = 0
460
Step 5 :
When a fraction equals zero :
5.1 When a fraction equals zero ...Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.
Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.
Here's how:
142-5x
—————— • 460 = 0 • 460
460
Now, on the left hand side, the 460 cancels out the denominator, while, on the right hand side, zero times anything is still zero.
The equation now takes the shape :
142-5x = 0
Solving a Single Variable Equation :
5.2 Solve : -5x+142 = 0
Subtract 142 from both sides of the equation :
-5x = -142
Multiply both sides of the equation by (-1) : 5x = 142
Divide both sides of the equation by 5:
x = 142/5 = 28.400
One solution was found :
x = 142/5 = 28.400How did we do?
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