7x-4(-21)=84

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Solution for 7x-4(-21)=84 equation: 


Simplifying
7x + -4(-21) = 84

Multiply -4 * -21
7x + 84 = 84

Reorder the terms:
84 + 7x = 84

Add '-84' to each side of the equation.
84 + -84 + 7x = 84 + -84

Combine like terms: 84 + -84 = 0
0 + 7x = 84 + -84
7x = 84 + -84

Combine like terms: 84 + -84 = 0
7x = 0

Solving
7x = 0

Solving for variable 'x'.

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

Divide each side by '7'.
x = 0

Simplifying
x = 0

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