Question

под А):В)...….................

Answer 1

a) 0.4(7x-2)-1.6+1.7x=2.8x-0.8-1.6+1.7x=4.5x-2.4
b) (1.2a-4)+(40-4.8a)=1.2a-4+40-4.8a=-3.6a+36=a-10
c) 2.5(4-3y)-y+2.3=10-7.5y-y+2.3=12.3-8.5y