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Unicornshi
@Unicornshi
March 2022
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IrkaShevko
Verified answer
1.
7a - 4b - 3a + 5b = (7-3)a + (5-4)b = 4a + b
Ответ: 1) 4a + b
2.
7y - 3y + 9y = 21
Ответ: 3)
3.
с + 5,4 - 4,9 - с = 0,5
Ответ: 3)
4.
-5х = -0,4 + 2,3
-5х = 1,9
х = 1,9 : (-5)
х = -0,38
Ответ: 4)
В1)
5х - 10 - 9 + 3х = 8х - 19
В2)
2(b + c) - (b - c) = 2b + 2c - b + c = b + 3c
B3)
0,8y - 0,4y = -2,6 - 1,4
0,4y = -4
y = -10
1 votes
Thanks 1
travinalila
1)
3)
3)
4)
5х-10-9+3х = 8х-19
2(b+c)-(b-c)=2b+2c-b+c= b+3c
0,8y+1,4=0,4y - 2,6
0,8y - 0,4y= - 2,6 - 1,4
0,4y= - 4
y= - 10
0 votes
Thanks 1
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Answers & Comments
Verified answer
1.7a - 4b - 3a + 5b = (7-3)a + (5-4)b = 4a + b
Ответ: 1) 4a + b
2.
7y - 3y + 9y = 21
Ответ: 3)
3.
с + 5,4 - 4,9 - с = 0,5
Ответ: 3)
4.
-5х = -0,4 + 2,3
-5х = 1,9
х = 1,9 : (-5)
х = -0,38
Ответ: 4)
В1)
5х - 10 - 9 + 3х = 8х - 19
В2)
2(b + c) - (b - c) = 2b + 2c - b + c = b + 3c
B3)
0,8y - 0,4y = -2,6 - 1,4
0,4y = -4
y = -10
3)
3)
4)
5х-10-9+3х = 8х-19
2(b+c)-(b-c)=2b+2c-b+c= b+3c
0,8y+1,4=0,4y - 2,6
0,8y - 0,4y= - 2,6 - 1,4
0,4y= - 4
y= - 10