7-9X=31-30X

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Solution for 7-9X=31-30X equation:


Simplifying
7 + -9X = 31 + -30X

Solving
7 + -9X = 31 + -30X

Solving for variable 'X'.

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

Add '30X' to each side of the equation.
7 + -9X + 30X = 31 + -30X + 30X

Combine like terms: -9X + 30X = 21X
7 + 21X = 31 + -30X + 30X

Combine like terms: -30X + 30X = 0
7 + 21X = 31 + 0
7 + 21X = 31

Add '-7' to each side of the equation.
7 + -7 + 21X = 31 + -7

Combine like terms: 7 + -7 = 0
0 + 21X = 31 + -7
21X = 31 + -7

Combine like terms: 31 + -7 = 24
21X = 24

Divide each side by '21'.
X = 1.142857143

Simplifying
X = 1.142857143

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