Answer:..
Step-by-step explanation:
Answer:
okay, 26.4*2.7 = 26*3 (when estimated)
26*3=78(or just somewhere around 70)
17.5
18
-2(3x+4)+7x=10
-6x-8+7x=10
x=10+8
x=18
(3x+1)^2