Ответ:
1)2*5х=5*14
10х=70
х=70/10
х=7
2)7*6х=56*3
42х=168
х=168/42
х=4
3)(х+4)*3=15*8
х+4=120/3
х=40-4
х=36
4)30*(х-2)=18*5
30*(х-2)=90
х=90/30+2
х=5
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Ответ:
1)2*5х=5*14
10х=70
х=70/10
х=7
2)7*6х=56*3
42х=168
х=168/42
х=4
3)(х+4)*3=15*8
х+4=120/3
х=40-4
х=36
4)30*(х-2)=18*5
30*(х-2)=90
х=90/30+2
х=5
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