What is the answer to 3x+4+8x+4=140 ?

The answer to 3x+4+8x+4=140 is x=12

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3x+4+8x+4=140

3 x + 4 + 8 x + 4 = 140

x = 12

Solution steps

3 x + 4 + 8 x + 4 = 140

Group like terms

3 x + 8 x + 4 + 4 = 140

Add similar elements:

3 x + 8 x = 11 x

11 x + 4 + 4 = 140

Add the numbers:

4 + 4 = 8

11 x + 8 = 140

Move

8

to the right side

11 x = 132

Divide both sides by

11

x = 12

- 2 x + 5 + (- x) - 5 = 0

- 6 m = - 8 - 7 m

(x + 4)^{2} - (x - 3)^{2} = 343

x, 3 x y^{2} = y^{2} + 6 y

\frac{4 v + 7}{15} = \frac{6 v + 2}{10}