10-7x=90-21x

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Solution for 10-7x=90-21x equation:


Simplifying
10 + -7x = 90 + -21x

Solving
10 + -7x = 90 + -21x

Solving for variable 'x'.

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

Add '21x' to each side of the equation.
10 + -7x + 21x = 90 + -21x + 21x

Combine like terms: -7x + 21x = 14x
10 + 14x = 90 + -21x + 21x

Combine like terms: -21x + 21x = 0
10 + 14x = 90 + 0
10 + 14x = 90

Add '-10' to each side of the equation.
10 + -10 + 14x = 90 + -10

Combine like terms: 10 + -10 = 0
0 + 14x = 90 + -10
14x = 90 + -10

Combine like terms: 90 + -10 = 80
14x = 80

Divide each side by '14'.
x = 5.714285714

Simplifying
x = 5.714285714

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