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lis811
@lis811
August 2022
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Реши уравнение:
11р +42-2р+9р=.......
Если можно, с объяснением!!!
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barmaley22
= 11р - 2р + 9р + 42 = 18р + 42
П.С.: просто "передвинули" слагаемые
2 votes
Thanks 2
lis811
спасибо
Tochka777
11р-2р+9р=-42
18р=-42
р=-42÷18=-2ц 6/18=-2ц 1/3
11×(-2ц 1/3)-2×(-2ц 1/3)+9×(-2ц 1/3)=-42
11×(-7/3)-2×(-7/3)+9×(-7/3)=-42
-77/3+14/3-63/3=-42
(-77+14-63)/3=-42
-126/3=-42
-42=-42
1 votes
Thanks 1
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Answers & Comments
П.С.: просто "передвинули" слагаемые
18р=-42
р=-42÷18=-2ц 6/18=-2ц 1/3
11×(-2ц 1/3)-2×(-2ц 1/3)+9×(-2ц 1/3)=-42
11×(-7/3)-2×(-7/3)+9×(-7/3)=-42
-77/3+14/3-63/3=-42
(-77+14-63)/3=-42
-126/3=-42
-42=-42