What is the answer to (7+u)/8 =(u+12)/4 ?

The answer to (7+u)/8 =(u+12)/4 is u=-17

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(7+u)/8 =(u+12)/4

\frac{7 + u}{8} = \frac{u + 12}{4}

u = - 17

Solution steps

\frac{7 + u}{8} = \frac{u + 12}{4}

Apply fraction cross multiply: if

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

then

a \cdot d = b \cdot c

(7 + u) \cdot 4 = 8 (u + 12)

Expand

(7 + u) \cdot 4 : 28 + 4 u

Expand

8 (u + 12) : 8 u + 96

28 + 4 u = 8 u + 96

Move

28

to the right side

4 u = 8 u + 68

Move

8 u

to the left side

- 4 u = 68

Divide both sides by

- 4

u = - 17

\frac{x}{2} + \frac{x}{6} = 2

\frac{x}{7} - 8 = - 10

x, m_{1} (x) = m_{2} (3 - x)

3 x - 5 = 2.5 + 3 - (x - 4)

3 (x - 4) = 5 (x + 6)

What is the answer to (7+u)/8 =(u+12)/4 ?
The answer to (7+u)/8 =(u+12)/4 is u=-17
Solve for u: (7+u)/8 =(u+12)/4
The solution is u=-17