How do I solve this??

Answer:
r = -1/2
Step-by-step explanation:
3(5 + 4r) = -18r
15 +12r = -18r by distributive property
15 = -12r - 18r
15 = -30r
r = - 1/2r
Answer: Isolate the variable by dividing each side by factors that don't contain the variable.
Exact Form:
r=−411
Decimal Form:
r=−0.¯¯¯¯36
Hope this helps from yours truly Baby yoda ;)