What is the answer to 3x+4x+5x=180 ?

The answer to 3x+4x+5x=180 is x=15

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3x+4x+5x=180

3 x + 4 x + 5 x = 180

x = 15

Solution steps

3 x + 4 x + 5 x = 180

Add similar elements:

3 x + 4 x + 5 x = 12 x

12 x = 180

Divide both sides by

12

x = 15

x, - 6 x + 6 y = 6

x, - 2 x + 2 y = 20

4 (x - 3) + 40 = 64 - 3 (x - 2)

5 x - (12 + x) = - 13

y = \frac{1}{2} (- 2) + 3