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July 2022
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jekadva
Verified answer
1)
1,5x - 2,2 = 12,8 - 3,5x
1,5x + 3,5x = 12,8 + 2,2
5x = 15
x = 15:5
x = 3
2)
4,1x + 2,5 - 2,3x - 3,9 = 1,6x
1,8x - 1,4 = 1,6x
1,8x - 1,6x = 1,4
0,2x = 1,4
x = 1,4 : 0,2
x = 7
========================
3)
x - 10 = 2x - 30
2x - x = 30 - 10
x = 20стульев было в первом кабинете
3 votes
Thanks 4
Puuuuuuuuuuuuuuuk
спасибо огромное и за первое задание
Puuuuuuuuuuuuuuuk
почему
Puuuuuuuuuuuuuuuk
и не правильно првое или второе задание
Puuuuuuuuuuuuuuuk
спасибо
Puuuuuuuuuuuuuuuk
так то лучше
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Answers & Comments
Verified answer
1)1,5x - 2,2 = 12,8 - 3,5x
1,5x + 3,5x = 12,8 + 2,2
5x = 15
x = 15:5
x = 3
2)
4,1x + 2,5 - 2,3x - 3,9 = 1,6x
1,8x - 1,4 = 1,6x
1,8x - 1,6x = 1,4
0,2x = 1,4
x = 1,4 : 0,2
x = 7
========================
3)
x - 10 = 2x - 30
2x - x = 30 - 10
x = 20стульев было в первом кабинете