Question

оба номера пжжж даю 20баллов​

Answer 1

№1022

1) 5a+3a-7a-2a=-a

2) -4b+5b-6b+3b=-2b

3) 2,8x+3,5x-1,8x-2,5x=2x

4) 19a-12b-7a+24b=12a+12b

№1023

1) 19a-12b-7a+24b=12a+12b

$2) 3\frac{2}{11} x+2\frac{3}{7} x-1\frac{2}{11} x-1\frac{3}{7} x=2x+x=3x$

3) 7,5x-9,4y-3,5x+4,4y=4x-5y

$4)\frac{6}{7} x-\frac{5}{13} y-\frac{2}{7} x-\frac{1}{13}y=\frac{4}{7} x-\frac{6}{13}y$