Question

What is the value of q in the equation q-7.1=8.3 and why?A.] 15, 4 because to isolate q, you would add 7.1 and 8.3 B.] 1.2, because isolate q, you would Subtract 7.1 from 8.3 C.] -1.2 because 7.1-8.3=-1.2D.] -15.4, because -7.1-8.3=-15.4

Answer 1

$\begin{gathered} q-7.1=8.3 \\ \text{Add 7.1 to both sides:} \\ q-7.1+7.1=8.3+7.1 \\ q=15.4 \end{gathered}$

Answer:

A.] 15, 4 because to isolate q, you would add 7.1 and 8.3