7(3x-5)-3(3x+4)=25

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Solution for 7(3x-5)-3(3x+4)=25 equation:


Simplifying
7(3x + -5) + -3(3x + 4) = 25

Reorder the terms:
7(-5 + 3x) + -3(3x + 4) = 25
(-5 * 7 + 3x * 7) + -3(3x + 4) = 25
(-35 + 21x) + -3(3x + 4) = 25

Reorder the terms:
-35 + 21x + -3(4 + 3x) = 25
-35 + 21x + (4 * -3 + 3x * -3) = 25
-35 + 21x + (-12 + -9x) = 25

Reorder the terms:
-35 + -12 + 21x + -9x = 25

Combine like terms: -35 + -12 = -47
-47 + 21x + -9x = 25

Combine like terms: 21x + -9x = 12x
-47 + 12x = 25

Solving
-47 + 12x = 25

Solving for variable 'x'.

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

Add '47' to each side of the equation.
-47 + 47 + 12x = 25 + 47

Combine like terms: -47 + 47 = 0
0 + 12x = 25 + 47
12x = 25 + 47

Combine like terms: 25 + 47 = 72
12x = 72

Divide each side by '12'.
x = 6

Simplifying
x = 6

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