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ilnaz24
@ilnaz24
July 2022
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Решите уравнения с объяснением и проверкой. а)d:30=200-80 б) 140-x=630:7 в) 6*c=420+120 г)320:a=72:36
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lixa4ka
А) d÷30=200-80
d÷30=120
d=120×30
d=3600
3600÷30=200-80
120=120
б) 140-x=630÷7
140-x=90
x= 140-90
x =50
140-50= 630÷7
90=90
в) 6×c=420+120
6×c=540
c =540÷6
c= 90
6×90=420+120
540=540
г) 320÷a=72÷36
320÷a=2
a =320÷2
a=160
320÷160=72÷36
2=2
1 votes
Thanks 5
gromekanastasia
А) d:30=200-80
d:30=120
d=120*30
d=3600
3600:30=200-80
120=120
б)140-x=630:7
140-x=90
x=140-90
x=50
140-50=630:7
90=90
в)6*c=420+120
6*c=540
c=540:6
c=90
6*90=420+120
540=540
г)320:a=72:36
320:a=2
a=320:2
a=160
320:160=72:36
2=2
2 votes
Thanks 1
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Answers & Comments
d÷30=120
d=120×30
d=3600
3600÷30=200-80
120=120
б) 140-x=630÷7
140-x=90
x= 140-90
x =50
140-50= 630÷7
90=90
в) 6×c=420+120
6×c=540
c =540÷6
c= 90
6×90=420+120
540=540
г) 320÷a=72÷36
320÷a=2
a =320÷2
a=160
320÷160=72÷36
2=2
d:30=120
d=120*30
d=3600
3600:30=200-80
120=120
б)140-x=630:7
140-x=90
x=140-90
x=50
140-50=630:7
90=90
в)6*c=420+120
6*c=540
c=540:6
c=90
6*90=420+120
540=540
г)320:a=72:36
320:a=2
a=320:2
a=160
320:160=72:36
2=2