Question 116609
bc = 2(ab) + 6
ac = 4(ab) + 2
ab + bc  = ac
ab + 2(ab) + 6  = 4(ab) + 2
ab = 6 - 2
ab = 4 answer
check answer
bc = 2(4) + 6
bc = 14
ac = 4(4) + 2
ac = 18
Does ab + bc = ac?
4 + 14 = 18
18 = 18
OK