Answer: r=−5
Step-by-step explanation:
−6(3r−8)=138
(−6)(3r)+(−6)(−8)=138(Distribute)
−18r+48=138
Step 2: Subtract 48 from both sides.
−18r+48−48=138−48
−18r=90
Step 3: Divide both sides by -18.
−18r /−18 = 90 /−18 r= −5
