Question

реши уравнения. х+2=7×9, х-20=63÷9, х+700=890

Answer 1

1.
$x + 2 = 7 \times 9 \\ x + 2 = 63 \\ x = 63 - 2 \\ x = 61 \\ 61 + 2 = 7 \times 9$
2.
$x - 20 = 63 \div 9 \\ x - 20 = 7 \\ x = 20 + 7 \\ x = 27 \\ 27 - 20 = 6 \div 9$
3.
$x + 700 = 890 \\ x = 890 - 700 \\ x = 190 \\ 190 + 700 = 890$

Answer 2

Х+2=7*9
х+2=63
х=63-2
х=61

х-20=7
х=7+20
х=27


х+700=890
х=890-700
х=190