-7(2x+7)+4(5x-2)=-21

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Solution for -7(2x+7)+4(5x-2)=-21 equation:


Simplifying
-7(2x + 7) + 4(5x + -2) = -21

Reorder the terms:
-7(7 + 2x) + 4(5x + -2) = -21
(7 * -7 + 2x * -7) + 4(5x + -2) = -21
(-49 + -14x) + 4(5x + -2) = -21

Reorder the terms:
-49 + -14x + 4(-2 + 5x) = -21
-49 + -14x + (-2 * 4 + 5x * 4) = -21
-49 + -14x + (-8 + 20x) = -21

Reorder the terms:
-49 + -8 + -14x + 20x = -21

Combine like terms: -49 + -8 = -57
-57 + -14x + 20x = -21

Combine like terms: -14x + 20x = 6x
-57 + 6x = -21

Solving
-57 + 6x = -21

Solving for variable 'x'.

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

Add '57' to each side of the equation.
-57 + 57 + 6x = -21 + 57

Combine like terms: -57 + 57 = 0
0 + 6x = -21 + 57
6x = -21 + 57

Combine like terms: -21 + 57 = 36
6x = 36

Divide each side by '6'.
x = 6

Simplifying
x = 6

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