8x+5(9-x)=51

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Solution for 8x+5(9-x)=51 equation:


Simplifying
8x + 5(9 + -1x) = 51
8x + (9 * 5 + -1x * 5) = 51
8x + (45 + -5x) = 51

Reorder the terms:
45 + 8x + -5x = 51

Combine like terms: 8x + -5x = 3x
45 + 3x = 51

Solving
45 + 3x = 51

Solving for variable 'x'.

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

Add '-45' to each side of the equation.
45 + -45 + 3x = 51 + -45

Combine like terms: 45 + -45 = 0
0 + 3x = 51 + -45
3x = 51 + -45

Combine like terms: 51 + -45 = 6
3x = 6

Divide each side by '3'.
x = 2

Simplifying
x = 2

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