Question

Х+Х+Х=30
Х×43=43÷х
Х-18=16-16
Х+20=12+8

Answer 1

Ответ:

x+x+x=30

3x=30

x=10

x×43=43÷x

x²=1

x=1

x-18=16-16

x=0+18

x=18

x+20=12+8

x=20+20

x=40