-7-4(2x-1)=-21

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Solution for -7-4(2x-1)=-21 equation: 


Simplifying
-7 + -4(2x + -1) = -21

Reorder the terms:
-7 + -4(-1 + 2x) = -21
-7 + (-1 * -4 + 2x * -4) = -21
-7 + (4 + -8x) = -21

Combine like terms: -7 + 4 = -3
-3 + -8x = -21

Solving
-3 + -8x = -21

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '3' to each side of the equation.
-3 + 3 + -8x = -21 + 3

Combine like terms: -3 + 3 = 0
0 + -8x = -21 + 3
-8x = -21 + 3

Combine like terms: -21 + 3 = -18
-8x = -18

Divide each side by '-8'.
x = 2.25

Simplifying
x = 2.25

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