What is the answer to (2y)/7 =(y+3)/4 ?

The answer to (2y)/7 =(y+3)/4 is y=21

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(2y)/7 =(y+3)/4

\frac{2 y}{7} = \frac{y + 3}{4}

y = 21

Solution steps

\frac{2 y}{7} = \frac{y + 3}{4}

Apply fraction cross multiply: if

\frac{a}{b} = \frac{c}{d}

then

a \cdot d = b \cdot c

2 y \cdot 4 = 7 (y + 3)

Simplify

8 y = 7 (y + 3)

Expand

7 (y + 3) : 7 y + 21

8 y = 7 y + 21

Move

7 y

to the left side

y = 21

5 = 12 x

x + 7 = 2 x - 5

- 2 x + 16 = 4

5 + 1.5 (2 d - 1) = 0.5

9 x - 2 = 16, x