1/4(r-5/2)=1/8 i need an answer cant figure it out

Mathematics

2 answers:

san4es73 [151]2 years ago

5 0

1/4(r - 5/2) = 1/8
Divide both sides by 1/8 :0
2(r - 5/2) = 1
r - 5/2 = 1/2
r = 1/2 + 5/2 = 6/2

r = 3 Answer

egoroff_w [7]2 years ago

5 0

$\dfrac{1}{4}(r - \dfrac{5}{2}) = \dfrac{1}{8}$

The LCD of both fractions is 8, so multiply both sides by 8.

$8 \times \dfrac{1}{4}(r - \dfrac{5}{2}) = 8 \times \dfrac{1}{8}$

$2(r - \dfrac{5}{2}) = 1$

Distribute the 2 on the left side.

$2r - 5 = 1$

$2r = 6$

$r = 3$

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