30(x-2)-5(4-x)=40(x-7)

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Solution for 30(x-2)-5(4-x)=40(x-7) equation:


Simplifying
30(x + -2) + -5(4 + -1x) = 40(x + -7)

Reorder the terms:
30(-2 + x) + -5(4 + -1x) = 40(x + -7)
(-2 * 30 + x * 30) + -5(4 + -1x) = 40(x + -7)
(-60 + 30x) + -5(4 + -1x) = 40(x + -7)
-60 + 30x + (4 * -5 + -1x * -5) = 40(x + -7)
-60 + 30x + (-20 + 5x) = 40(x + -7)

Reorder the terms:
-60 + -20 + 30x + 5x = 40(x + -7)

Combine like terms: -60 + -20 = -80
-80 + 30x + 5x = 40(x + -7)

Combine like terms: 30x + 5x = 35x
-80 + 35x = 40(x + -7)

Reorder the terms:
-80 + 35x = 40(-7 + x)
-80 + 35x = (-7 * 40 + x * 40)
-80 + 35x = (-280 + 40x)

Solving
-80 + 35x = -280 + 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.
-80 + 35x + -40x = -280 + 40x + -40x

Combine like terms: 35x + -40x = -5x
-80 + -5x = -280 + 40x + -40x

Combine like terms: 40x + -40x = 0
-80 + -5x = -280 + 0
-80 + -5x = -280

Add '80' to each side of the equation.
-80 + 80 + -5x = -280 + 80

Combine like terms: -80 + 80 = 0
0 + -5x = -280 + 80
-5x = -280 + 80

Combine like terms: -280 + 80 = -200
-5x = -200

Divide each side by '-5'.
x = 40

Simplifying
x = 40

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