What is the answer to 7(-1+4x)-12x=5 ?

The answer to 7(-1+4x)-12x=5 is x= 3/4

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7(-1+4x)-12x=5

7 (- 1 + 4 x) - 12 x = 5

x = \frac{3}{4}

Decimal Notation

x = 0.75

Solution steps

7 (- 1 + 4 x) - 12 x = 5

Expand

7 (- 1 + 4 x) : - 7 + 28 x

- 7 + 28 x - 12 x = 5

Add similar elements:

28 x - 12 x = 16 x

- 7 + 16 x = 5

Move

7

to the right side

16 x = 12

Divide both sides by

16

x = \frac{3}{4}

r + 10 = 3

y, y x + y = x - 1

- 2 x - 3 = - 4 x + 3

7 w = 35

10 = - 5 y