10x+30(x-4)=80

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Solution for 10x+30(x-4)=80 equation:


Simplifying
10x + 30(x + -4) = 80

Reorder the terms:
10x + 30(-4 + x) = 80
10x + (-4 * 30 + x * 30) = 80
10x + (-120 + 30x) = 80

Reorder the terms:
-120 + 10x + 30x = 80

Combine like terms: 10x + 30x = 40x
-120 + 40x = 80

Solving
-120 + 40x = 80

Solving for variable 'x'.

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

Add '120' to each side of the equation.
-120 + 120 + 40x = 80 + 120

Combine like terms: -120 + 120 = 0
0 + 40x = 80 + 120
40x = 80 + 120

Combine like terms: 80 + 120 = 200
40x = 200

Divide each side by '40'.
x = 5

Simplifying
x = 5

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