Question

реши уровнения
28+(6+х)=50
(20+х)+70=200

Answer 1

1)28+6+х=50
34+х=50
х=50-34
х=16
_________
28+6+16=50
50=50
2) 20+х+70=200
90+х=200
х=200-90
х=110
__________
20+110+70=200
200=200

Answer 2

1) 28-(6+х)=50
6+х=50-28
6+х=22
Х=22-6
Х=16
28+(6+16)=50
2) (20+х)+70=200
20+х=200-70
20+х=130
Х=130-20
Х=110
(20+110)+70=200