Answer:
b=a*12
Step-by-step explanation:
ab+7=19
(subtract the 7 from the other side)
ab=12
(put b by itself)
a=12/b
b=a*12
Answer:
(6,3)
Step-by-step explanation:
Use desmos
Answer:
x=7
Step-by-step explanation:
Add 2/3 to both sides
12x=84
Divide both sides by 12
x=7