140=3x+21

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Solution for 140=3x+21 equation:


Simplifying
140 = 3x + 21

Reorder the terms:
140 = 21 + 3x

Solving
140 = 21 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
140 + -3x = 21 + 3x + -3x

Combine like terms: 3x + -3x = 0
140 + -3x = 21 + 0
140 + -3x = 21

Add '-140' to each side of the equation.
140 + -140 + -3x = 21 + -140

Combine like terms: 140 + -140 = 0
0 + -3x = 21 + -140
-3x = 21 + -140

Combine like terms: 21 + -140 = -119
-3x = -119

Divide each side by '-3'.
x = 39.66666667

Simplifying
x = 39.66666667

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