7X+9=10X-18

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Solution for 7X+9=10X-18 equation:


Simplifying
7X + 9 = 10X + -18

Reorder the terms:
9 + 7X = 10X + -18

Reorder the terms:
9 + 7X = -18 + 10X

Solving
9 + 7X = -18 + 10X

Solving for variable 'X'.

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

Add '-10X' to each side of the equation.
9 + 7X + -10X = -18 + 10X + -10X

Combine like terms: 7X + -10X = -3X
9 + -3X = -18 + 10X + -10X

Combine like terms: 10X + -10X = 0
9 + -3X = -18 + 0
9 + -3X = -18

Add '-9' to each side of the equation.
9 + -9 + -3X = -18 + -9

Combine like terms: 9 + -9 = 0
0 + -3X = -18 + -9
-3X = -18 + -9

Combine like terms: -18 + -9 = -27
-3X = -27

Divide each side by '-3'.
X = 9

Simplifying
X = 9

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