1+8(-x+10)=9

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Solution for 1+8(-x+10)=9 equation:


Simplifying
1 + 8(-1x + 10) = 9

Reorder the terms:
1 + 8(10 + -1x) = 9
1 + (10 * 8 + -1x * 8) = 9
1 + (80 + -8x) = 9

Combine like terms: 1 + 80 = 81
81 + -8x = 9

Solving
81 + -8x = 9

Solving for variable 'x'.

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

Add '-81' to each side of the equation.
81 + -81 + -8x = 9 + -81

Combine like terms: 81 + -81 = 0
0 + -8x = 9 + -81
-8x = 9 + -81

Combine like terms: 9 + -81 = -72
-8x = -72

Divide each side by '-8'.
x = 9

Simplifying
x = 9

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