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 :
p-7/12-(3/10)>0
Step by step solution :
Step 1 :
3
Simplify ——
10
Equation at the end of step 1 :
7 3
(p - ——) - —— > 0
12 10
Step 2 :
7
Simplify ——
12
Equation at the end of step 2 :
7 3
(p - ——) - —— > 0
12 10
Step 3 :
Rewriting the whole as an Equivalent Fraction :
3.1 Subtracting a fraction from a whole
Rewrite the whole as a fraction using 12 as the denominator :
p p • 12
p = — = ——————
1 12
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:
p • 12 - (7) 12p - 7
———————————— = ———————
12 12
Equation at the end of step 3 :
(12p - 7) 3
————————— - —— > 0
12 10
Step 4 :
Calculating the Least Common Multiple :
4.1 Find the Least Common Multiple
The left denominator is : 12
The right denominator is : 10
Prime Factor | Left Denominator | Right Denominator | L.C.M = Max {Left,Right} |
---|---|---|---|
2 | 2 | 1 | 2 |
3 | 1 | 0 | 1 |
5 | 0 | 1 | 1 |
Product of all Prime Factors | 12 | 10 | 60 |
Least Common Multiple:
60
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 = 6
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. (12p-7) • 5 —————————————————— = ——————————— L.C.M 60 R. Mult. • R. Num. 3 • 6 —————————————————— = ————— L.C.M 60
Adding fractions that have a common denominator :
4.4 Adding up the two equivalent fractions
(12p-7) • 5 - (3 • 6) 60p - 53
————————————————————— = ————————
60 60
Equation at the end of step 4 :
60p - 53
———————— > 0
60
Step 5 :
5.1 Multiply both sides by 60
5.2 Divide both sides by 60
p-(53/60) > 0
Solve Basic Inequality :
5.3 Add 53/60 to both sides
p > 53/60
Inequality Plot :
5.4 Inequality plot for
p - 0.883 > 0
One solution was found :
p > 53/60How did we do?
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