1) 4*18:6+80=? 210:7*16:2=? 99:11*6+36=? (77+13)*74-540=? (4*60+240):80=? (20*6+330):5=?...

Question

1)
4*18:6+80=?
210:7*16:2=?
99:11*6+36=?
(77+13)*74-540=?
(4*60+240):80=?
(20*6+330):5=?

2)
12+X=7+56 96:X=6
X=? X+46=100-12
X=? X*15=60
12+?=7+56

Comments

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Answer 1

4*18:6+80=92
210:7*16:2=240
99:11*6+36=90
(77+13)×74-540=6120
(4×60+240):80=6
(20×6+330):5=90



12+x=7+56
12+x=63
x=63-12
х=51
________
12+51=7+56
51=51


96:х=6
х=96:6
х=16
______
96:16=6
16=16

х+46=100-12
х+46=88
х=88-46
х=42
__________
42+46=100-12
42=42


х×15=60
х=60:15
х=4
_______
4×15=60
4=4