Question

Упростите выражение: 1) 2,8x-0.6+4.2x+16.8-7x 2)13.5y+7-5.2+8.9y-22.4

Answer 1

1) 2,8x-0.6+4.2x+16.8-7x= 16,2

2)13.5y+7-5.2+8.9y-22.4= 22,4у-20,6

Answer 2

1) 2,8x-0.6+4.2x+16.8-7x=16.2;

2)13.5y+7-5.2+8.9y-22.4=22.4y-20.2;