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Find the difference. Write your answer in simplest form.
11 7/16 - 4 7/12=

1 Answer

2 votes

Answer:

163

——— = 3.39583

48

Explanation:

47

Simplify ——

12

Equation at the end of step

1

:

117 47

——— - ——

16 12

STEP

2

:

117

Simplify ———

16

Equation at the end of step

2

:

117 47

——— - ——

16 12

STEP

3

:

Calculating the Least Common Multiple

3.1 Find the Least Common Multiple

The left denominator is : 16

The right denominator is : 12

Number of times each prime factor

appears in the factorization of:

Prime

Factor Left

Denominator Right

Denominator L.C.M = Max

{Left,Right}

2 4 2 4

3 0 1 1

Product of all

Prime Factors 16 12 48

Least Common Multiple:

48

Calculating Multipliers :

3.2 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 = 3

Right_M = L.C.M / R_Deno = 4

Making Equivalent Fractions :

3.3 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. 117 • 3

—————————————————— = ———————

L.C.M 48

R. Mult. • R. Num. 47 • 4

—————————————————— = ——————

L.C.M 48

Adding fractions that have a common denominator :

3.4 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:

117 • 3 - (47 • 4) 163

—————————————————— = ———

48 48

Final result :

163

——— = 3.39583

48

User Akshin Jalilov
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