7(x-3)-4(x-3)=

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Solution for 7(x-3)-4(x-3)= equation:


Simplifying
7(x + -3) + -4(x + -3) = 0

Reorder the terms:
7(-3 + x) + -4(x + -3) = 0
(-3 * 7 + x * 7) + -4(x + -3) = 0
(-21 + 7x) + -4(x + -3) = 0

Reorder the terms:
-21 + 7x + -4(-3 + x) = 0
-21 + 7x + (-3 * -4 + x * -4) = 0
-21 + 7x + (12 + -4x) = 0

Reorder the terms:
-21 + 12 + 7x + -4x = 0

Combine like terms: -21 + 12 = -9
-9 + 7x + -4x = 0

Combine like terms: 7x + -4x = 3x
-9 + 3x = 0

Solving
-9 + 3x = 0

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + 3x = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 3x = 0 + 9
3x = 0 + 9

Combine like terms: 0 + 9 = 9
3x = 9

Divide each side by '3'.
x = 3

Simplifying
x = 3

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