47+x+x=90

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Solution for 47+x+x=90 equation: 


Simplifying
47 + x + x = 90

Combine like terms: x + x = 2x
47 + 2x = 90

Solving
47 + 2x = 90

Solving for variable 'x'.

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

Add '-47' to each side of the equation.
47 + -47 + 2x = 90 + -47

Combine like terms: 47 + -47 = 0
0 + 2x = 90 + -47
2x = 90 + -47

Combine like terms: 90 + -47 = 43
2x = 43

Divide each side by '2'.
x = 21.5

Simplifying
x = 21.5

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