2j-(j-7)=12

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Solution for 2j-(j-7)=12 equation:


Simplifying
2j + -1(j + -7) = 12

Reorder the terms:
2j + -1(-7 + j) = 12
2j + (-7 * -1 + j * -1) = 12
2j + (7 + -1j) = 12

Reorder the terms:
7 + 2j + -1j = 12

Combine like terms: 2j + -1j = 1j
7 + 1j = 12

Solving
7 + 1j = 12

Solving for variable 'j'.

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

Add '-7' to each side of the equation.
7 + -7 + 1j = 12 + -7

Combine like terms: 7 + -7 = 0
0 + 1j = 12 + -7
1j = 12 + -7

Combine like terms: 12 + -7 = 5
1j = 5

Divide each side by '1'.
j = 5

Simplifying
j = 5

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