Answer:
2(4-x)=26
Step-by-step explanation:
1. Plug "-9" into each equation as "x"
2(4--9)=26
5(-9)+30=75
5(12--9)=15
3(-9+11)=-16
2. Solve each equation
2(4--9)=26 ~ 26=26
5(-9)+30=75 ~ -5=75
5(12--9)=15 ~ 105=15
3(-9+11)=-16 ~ 6=-16
