8j^2-74=-42

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Solution for 8j^2-74=-42 equation: 


Simplifying
8j2 + -74 = -42

Reorder the terms:
-74 + 8j2 = -42

Solving
-74 + 8j2 = -42

Solving for variable 'j'.

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

Add '74' to each side of the equation.
-74 + 74 + 8j2 = -42 + 74

Combine like terms: -74 + 74 = 0
0 + 8j2 = -42 + 74
8j2 = -42 + 74

Combine like terms: -42 + 74 = 32
8j2 = 32

Divide each side by '8'.
j2 = 4

Simplifying
j2 = 4

Take the square root of each side:
j = {-2, 2}

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