Solve for j
j=-2
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\frac{42}{-7}=j-4
Divide both sides by -7.
-6=j-4
Divide 42 by -7 to get -6.
j-4=-6
Swap sides so that all variable terms are on the left hand side.
j=-6+4
Add 4 to both sides.
j=-2
Add -6 and 4 to get -2.
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