This question is asking you to find the value of j, to do so you have to isolate or leave alone j by doing different mathematical operations according to the given equation.
The given equation is 7(j+4)=-60, the first step to solve this equation would be distribute, next subtract, and last divide.
7(j+4)=-60 Distribute 7 into the parenthesis
7j+28=-60 Subtract 28 in both sides
7j=-88 Divide by 7 to isolate j
j=-12.57
The value of j in this equation is around -12.57.