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 :
7/10-(1*(5/8)+p)>0
Step by step solution :
Step 1 :
5
Simplify —
8
Equation at the end of step 1 :
7 5
—— - ((1 • —) + p) > 0
10 8
Step 2 :
Rewriting the whole as an Equivalent Fraction :
2.1 Adding a whole to a fraction
Rewrite the whole as a fraction using 8 as the denominator :
p p • 8
p = — = —————
1 8
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 :
2.2 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:
5 + p • 8 8p + 5
————————— = ——————
8 8
Equation at the end of step 2 :
7 (8p + 5)
—— - ———————— > 0
10 8
Step 3 :
7
Simplify ——
10
Equation at the end of step 3 :
7 (8p + 5)
—— - ———————— > 0
10 8
Step 4 :
Calculating the Least Common Multiple :
4.1 Find the Least Common Multiple
The left denominator is : 10
The right denominator is : 8
| Prime Factor | Left Denominator | Right Denominator | L.C.M = Max {Left,Right} |
|---|---|---|---|
| 2 | 1 | 3 | 3 |
| 5 | 1 | 0 | 1 |
| Product of all Prime Factors | 10 | 8 | 40 |
Least Common Multiple:
40
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 = 4
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. 7 • 4 —————————————————— = ————— L.C.M 40 R. Mult. • R. Num. (8p+5) • 5 —————————————————— = —————————— L.C.M 40
Adding fractions that have a common denominator :
4.4 Adding up the two equivalent fractions
7 • 4 - ((8p+5) • 5) 3 - 40p
———————————————————— = ———————
40 40
Equation at the end of step 4 :
3 - 40p
——————— > 0
40
Step 5 :
5.1 Multiply both sides by 40
5.2 Multiply both sides by (-1)
Flip the inequality sign since you are multiplying by a negative number
40p-3 < 0
5.3 Divide both sides by 40
p-(3/40) < 0
Solve Basic Inequality :
5.4 Add 3/40 to both sides
p < 3/40
Inequality Plot :
5.5 Inequality plot for
-p + 0.075 > 0
One solution was found :
p < 3/40How did we do?
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