What is the answer to 2x+5x+15=90 ?

The answer to 2x+5x+15=90 is x= 75/7

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2x+5x+15=90

2 x + 5 x + 15 = 90

x = \frac{75}{7}

Solution steps

2 x + 5 x + 15 = 90

Add similar elements:

2 x + 5 x = 7 x

7 x + 15 = 90

Move

15

to the right side

7 x = 75

Divide both sides by

7

x = \frac{75}{7}

2.4 (n - 1) = 12

10 a - 25 + 5 b

- \frac{x}{3} = 10

\frac{3}{4} x^{2} + 12 = 0

2 x^{2} - 5 x - 3