21x+45=13x-3

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Solution for 21x+45=13x-3 equation:


Simplifying
21x + 45 = 13x + -3

Reorder the terms:
45 + 21x = 13x + -3

Reorder the terms:
45 + 21x = -3 + 13x

Solving
45 + 21x = -3 + 13x

Solving for variable 'x'.

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

Add '-13x' to each side of the equation.
45 + 21x + -13x = -3 + 13x + -13x

Combine like terms: 21x + -13x = 8x
45 + 8x = -3 + 13x + -13x

Combine like terms: 13x + -13x = 0
45 + 8x = -3 + 0
45 + 8x = -3

Add '-45' to each side of the equation.
45 + -45 + 8x = -3 + -45

Combine like terms: 45 + -45 = 0
0 + 8x = -3 + -45
8x = -3 + -45

Combine like terms: -3 + -45 = -48
8x = -48

Divide each side by '8'.
x = -6

Simplifying
x = -6

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