62:x+38=40 43+x=500:10 X-720=49:7*9

Question

62:x+38=40
43+x=500:10
X-720=49:7*9

Answer 1

1)х=31
2)х=7
3)х=783
это точно

Answer 2

1) 62÷х+38 =40
х= 40-38
х= 62÷2
х=31

2) 43+х=500÷10
43+х=50
х=50-43
х=7

3) х-720=49÷7×9
х-720=7×9
х-720=63
х=720+63
х=783