Question

Rewrite all the equation using the inverse operation.I WILL SEND PICTURES OF PROBLEM

Answer 1

`\begin{gathered} 1.\text{ a=17} \\ 2.\text{ }b=87 \\ 3.x=10 \\ 4.x=42 \end{gathered}`

Step-by-step explanation

Step 1

`\begin{gathered} a+15=32 \\ \text{subtract 15 in both sides} \\ a+15-15=32-15 \\ a=17 \end{gathered}`

Step 2

`\begin{gathered} b-12=75 \\ \text{add 12 in both sides} \\ b-12+12=75+12 \\ b=87 \end{gathered}`

Step 3

`\begin{gathered} 9x=90 \\ we\text{ n}eed\text{ isolate x, so divide both sides by 9} \\ (9x)/(9)=(90)/(9) \\ x=10 \end{gathered}`

Step 4

`\begin{gathered} (x)/(6)=7 \\ \text{Multiply both sides by 6} \\ (x)/(6)\cdot6=7\cdot6 \\ x=42 \end{gathered}`

I hope this helps you