3x+4(x-20)=3(4x+10)

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Solution for 3x+4(x-20)=3(4x+10) equation:


Simplifying
3x + 4(x + -20) = 3(4x + 10)

Reorder the terms:
3x + 4(-20 + x) = 3(4x + 10)
3x + (-20 * 4 + x * 4) = 3(4x + 10)
3x + (-80 + 4x) = 3(4x + 10)

Reorder the terms:
-80 + 3x + 4x = 3(4x + 10)

Combine like terms: 3x + 4x = 7x
-80 + 7x = 3(4x + 10)

Reorder the terms:
-80 + 7x = 3(10 + 4x)
-80 + 7x = (10 * 3 + 4x * 3)
-80 + 7x = (30 + 12x)

Solving
-80 + 7x = 30 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
-80 + 7x + -12x = 30 + 12x + -12x

Combine like terms: 7x + -12x = -5x
-80 + -5x = 30 + 12x + -12x

Combine like terms: 12x + -12x = 0
-80 + -5x = 30 + 0
-80 + -5x = 30

Add '80' to each side of the equation.
-80 + 80 + -5x = 30 + 80

Combine like terms: -80 + 80 = 0
0 + -5x = 30 + 80
-5x = 30 + 80

Combine like terms: 30 + 80 = 110
-5x = 110

Divide each side by '-5'.
x = -22

Simplifying
x = -22

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