4x-3(21-10x)=39

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Solution for 4x-3(21-10x)=39 equation:


Simplifying
4x + -3(21 + -10x) = 39
4x + (21 * -3 + -10x * -3) = 39
4x + (-63 + 30x) = 39

Reorder the terms:
-63 + 4x + 30x = 39

Combine like terms: 4x + 30x = 34x
-63 + 34x = 39

Solving
-63 + 34x = 39

Solving for variable 'x'.

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

Add '63' to each side of the equation.
-63 + 63 + 34x = 39 + 63

Combine like terms: -63 + 63 = 0
0 + 34x = 39 + 63
34x = 39 + 63

Combine like terms: 39 + 63 = 102
34x = 102

Divide each side by '34'.
x = 3

Simplifying
x = 3

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