Question

35+×=200-140
490-×=100+210

Answer 1

Ответ:

$1)35 + x = 200 - 140 \\ 35 + x = 60 \\x = 60 - 35 \\ x = 25 \\ 2)490 - x = 100 + 210 \\ 490 - x = 310 \\ - x = 310 - 490 \\ - x = - 180 \\ x = 180$

Answer 2

35 + x = 200 - 140

35 + x = 60

x = 60 - 35

x = 25

35 + 25 = 200 - 140

60 = 60

490 - x = 100 + 210

490 - x = 310

x = 490 - 310

x = 180

490 - 180 = 100 + 210

310 = 310

ИЗИ