15x-40+40+21x+18=48x+18-8x-20

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Solution for 15x-40+40+21x+18=48x+18-8x-20 equation:


Simplifying
15x + -40 + 40 + 21x + 18 = 48x + 18 + -8x + -20

Reorder the terms:
-40 + 40 + 18 + 15x + 21x = 48x + 18 + -8x + -20

Combine like terms: -40 + 40 = 0
0 + 18 + 15x + 21x = 48x + 18 + -8x + -20
18 + 15x + 21x = 48x + 18 + -8x + -20

Combine like terms: 15x + 21x = 36x
18 + 36x = 48x + 18 + -8x + -20

Reorder the terms:
18 + 36x = 18 + -20 + 48x + -8x

Combine like terms: 18 + -20 = -2
18 + 36x = -2 + 48x + -8x

Combine like terms: 48x + -8x = 40x
18 + 36x = -2 + 40x

Solving
18 + 36x = -2 + 40x

Solving for variable 'x'.

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

Add '-40x' to each side of the equation.
18 + 36x + -40x = -2 + 40x + -40x

Combine like terms: 36x + -40x = -4x
18 + -4x = -2 + 40x + -40x

Combine like terms: 40x + -40x = 0
18 + -4x = -2 + 0
18 + -4x = -2

Add '-18' to each side of the equation.
18 + -18 + -4x = -2 + -18

Combine like terms: 18 + -18 = 0
0 + -4x = -2 + -18
-4x = -2 + -18

Combine like terms: -2 + -18 = -20
-4x = -20

Divide each side by '-4'.
x = 5

Simplifying
x = 5

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