What is the answer to 4x-7(x+20)=85 ?

The answer to 4x-7(x+20)=85 is x=-75

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4x-7(x+20)=85

4 x - 7 (x + 20) = 85

x = - 75

Solution steps

4 x - 7 (x + 20) = 85

Expand

- 7 (x + 20) : - 7 x - 140

4 x - 7 x - 140 = 85

Add similar elements:

4 x - 7 x = - 3 x

- 3 x - 140 = 85

Move

140

to the right side

- 3 x = 225

Divide both sides by

- 3

x = - 75

\frac{3 x - 1}{4} - \frac{2 x + 3}{5} = \frac{1 - x}{10}

2.9 y + 0.4 = - 8.01

\frac{y - 1}{4} = - 2

c, f = c a^{x}

\frac{x}{4} + 3 = 2 - x