9(j-4)=81

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Solution for 9(j-4)=81 equation: 


Simplifying
9(j + -4) = 81

Reorder the terms:
9(-4 + j) = 81
(-4 * 9 + j * 9) = 81
(-36 + 9j) = 81

Solving
-36 + 9j = 81

Solving for variable 'j'.

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

Add '36' to each side of the equation.
-36 + 36 + 9j = 81 + 36

Combine like terms: -36 + 36 = 0
0 + 9j = 81 + 36
9j = 81 + 36

Combine like terms: 81 + 36 = 117
9j = 117

Divide each side by '9'.
j = 13

Simplifying
j = 13

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