21(x-3)=84

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Solution for 21(x-3)=84 equation:


Simplifying
21(x + -3) = 84

Reorder the terms:
21(-3 + x) = 84
(-3 * 21 + x * 21) = 84
(-63 + 21x) = 84

Solving
-63 + 21x = 84

Solving for variable 'x'.

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

Add '63' to each side of the equation.
-63 + 63 + 21x = 84 + 63

Combine like terms: -63 + 63 = 0
0 + 21x = 84 + 63
21x = 84 + 63

Combine like terms: 84 + 63 = 147
21x = 147

Divide each side by '21'.
x = 7

Simplifying
x = 7

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