3x-9+4x-10=30

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Solution for 3x-9+4x-10=30 equation:


Simplifying
3x + -9 + 4x + -10 = 30

Reorder the terms:
-9 + -10 + 3x + 4x = 30

Combine like terms: -9 + -10 = -19
-19 + 3x + 4x = 30

Combine like terms: 3x + 4x = 7x
-19 + 7x = 30

Solving
-19 + 7x = 30

Solving for variable 'x'.

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

Add '19' to each side of the equation.
-19 + 19 + 7x = 30 + 19

Combine like terms: -19 + 19 = 0
0 + 7x = 30 + 19
7x = 30 + 19

Combine like terms: 30 + 19 = 49
7x = 49

Divide each side by '7'.
x = 7

Simplifying
x = 7

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