1=81-4(9)(x+1)

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Solution for 1=81-4(9)(x+1) equation:


Simplifying
1 = 81 + -4(9)(x + 1)

Reorder the terms:
1 = 81 + -4 * 9(1 + x)

Multiply -4 * 9
1 = 81 + -36(1 + x)
1 = 81 + (1 * -36 + x * -36)
1 = 81 + (-36 + -36x)

Combine like terms: 81 + -36 = 45
1 = 45 + -36x

Solving
1 = 45 + -36x

Solving for variable 'x'.

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

Add '36x' to each side of the equation.
1 + 36x = 45 + -36x + 36x

Combine like terms: -36x + 36x = 0
1 + 36x = 45 + 0
1 + 36x = 45

Add '-1' to each side of the equation.
1 + -1 + 36x = 45 + -1

Combine like terms: 1 + -1 = 0
0 + 36x = 45 + -1
36x = 45 + -1

Combine like terms: 45 + -1 = 44
36x = 44

Divide each side by '36'.
x = 1.222222222

Simplifying
x = 1.222222222

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