Question

70 Баллов!!!!!! Срочно!!!!!!!!!!!​

Answer 1

1: (в+22)+ 23= в + 22 + 23= в+45

2:(18+х)+12= 18+х+12= х + 30

3: (43+у) + 57= 43 + у + 57 = у + 99

4: 8х+3х-1х= 11х-1х =10х

5:1х+4х+5х= 5х+5х= 10х

6:10х+7х-8х= 17х -8х = 9х