What is the answer to 99=3x+8+12x ?

The answer to 99=3x+8+12x is x= 91/15

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99=3x+8+12x

99 = 3 x + 8 + 12 x

x = \frac{91}{15}

Decimal Notation

x = 6.06666 \dots

Solution steps

99 = 3 x + 8 + 12 x

Switch sides

3 x + 8 + 12 x = 99

Group like terms

3 x + 12 x + 8 = 99

Add similar elements:

3 x + 12 x = 15 x

15 x + 8 = 99

Move

8

to the right side

15 x = 91

Divide both sides by

15

x = \frac{91}{15}

7 y - 10 = 11

4 (y - 2) = 5 y

y - (- 13) = 49

2 = - \frac{2}{3} (x - 6)

- 2 (x + 1.5) - 7 = - (8.2 x + 1) - x