Question

Реши уравнения. 200-72:9×20+х=104

Х-(630:70+88:8)=190

Х-(110-540:18)×5=25×5

Answer 1

1) 72/9=8
8*20=160
200-160=40
40+х=104
х=104-40
х=64
2)630/70=9
88/8=11
9+11=20
х-20=190
х=190+20
х=210
3)25*5=125
540/18=30
110-30=80
80*5=400
х-400=125
х=125+400
х=525