Solution - Adding, subtracting and finding the least common multiple
Step by Step Solution
Rearrange:
Rearrange the equation by subtracting what is to the right of the greater than sign from both sides of the inequality :
7*m+3/16-(3/5)<0
Step by step solution :
Step 1 :
3
Simplify —
5
Equation at the end of step 1 :
3 3
(7m + ——) - — < 0
16 5
Step 2 :
3
Simplify ——
16
Equation at the end of step 2 :
3 3
(7m + ——) - — < 0
16 5
Step 3 :
Rewriting the whole as an Equivalent Fraction :
3.1 Adding a fraction to a whole
Rewrite the whole as a fraction using 16 as the denominator :
7m 7m • 16
7m = —— = ———————
1 16
Equivalent fraction : The fraction thus generated looks different but has the same value as the whole
Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator
Adding fractions that have a common denominator :
3.2 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:
7m • 16 + 3 112m + 3
——————————— = ————————
16 16
Equation at the end of step 3 :
(112m + 3) 3
—————————— - — < 0
16 5
Step 4 :
Calculating the Least Common Multiple :
4.1 Find the Least Common Multiple
The left denominator is : 16
The right denominator is : 5
| Prime Factor | Left Denominator | Right Denominator | L.C.M = Max {Left,Right} |
|---|---|---|---|
| 2 | 4 | 0 | 4 |
| 5 | 0 | 1 | 1 |
| Product of all Prime Factors | 16 | 5 | 80 |
Least Common Multiple:
80
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 = 5
Right_M = L.C.M / R_Deno = 16
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. (112m+3) • 5 —————————————————— = ———————————— L.C.M 80 R. Mult. • R. Num. 3 • 16 —————————————————— = —————— L.C.M 80
Adding fractions that have a common denominator :
4.4 Adding up the two equivalent fractions
(112m+3) • 5 - (3 • 16) 560m - 33
——————————————————————— = —————————
80 80
Equation at the end of step 4 :
560m - 33
————————— < 0
80
Step 5 :
5.1 Multiply both sides by 80
5.2 Divide both sides by 560
m-(33/560) < 0
Solve Basic Inequality :
5.3 Add 33/560 to both sides
m < 33/560
Inequality Plot :
5.4 Inequality plot for
7.000 m - 0.412 < 0
One solution was found :
m < 33/560How did we do?
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