3x-18+2*(x+40)=4*(x+20)

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Solution for 3x-18+2*(x+40)=4*(x+20) equation:


Simplifying
3x + -18 + 2(x + 40) = 4(x + 20)

Reorder the terms:
3x + -18 + 2(40 + x) = 4(x + 20)
3x + -18 + (40 * 2 + x * 2) = 4(x + 20)
3x + -18 + (80 + 2x) = 4(x + 20)

Reorder the terms:
-18 + 80 + 3x + 2x = 4(x + 20)

Combine like terms: -18 + 80 = 62
62 + 3x + 2x = 4(x + 20)

Combine like terms: 3x + 2x = 5x
62 + 5x = 4(x + 20)

Reorder the terms:
62 + 5x = 4(20 + x)
62 + 5x = (20 * 4 + x * 4)
62 + 5x = (80 + 4x)

Solving
62 + 5x = 80 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
62 + 5x + -4x = 80 + 4x + -4x

Combine like terms: 5x + -4x = 1x
62 + 1x = 80 + 4x + -4x

Combine like terms: 4x + -4x = 0
62 + 1x = 80 + 0
62 + 1x = 80

Add '-62' to each side of the equation.
62 + -62 + 1x = 80 + -62

Combine like terms: 62 + -62 = 0
0 + 1x = 80 + -62
1x = 80 + -62

Combine like terms: 80 + -62 = 18
1x = 18

Divide each side by '1'.
x = 18

Simplifying
x = 18

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