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Simplifying
5 + 3x2 = 18
Solving
5 + 3x2 = 18
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-5' to each side of the equation.
5 + -5 + 3x2 = 18 + -5
Combine like terms: 5 + -5 = 0
0 + 3x2 = 18 + -5
3x2 = 18 + -5
Combine like terms: 18 + -5 = 13
3x2 = 13
Divide each side by '3'.
x2 = 4.333333333
Simplifying
x2 = 4.333333333
Take the square root of each side:
x = {-2.081665999, 2.081665999}
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