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пжаши
@пжаши
July 2022
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1. (48+k)∙8=400
2. (5.4у + 8.3) — 2.1 = 23.1
3. 86-49:(2x-5)=79
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кляча
Verified answer
1. =
48 + к = 400 : 8
48 + к = 50
к = 50 - 48
к = 2
---------------------------
2, =
5,4у + 8,3 = 23,1 + 2,1
5,4у + 8,3 = 25,2
5,4у = 25,2 - 8,3
5,4у = 16,9
у = 169/54
у = 3 целых 7/54
---------------------------------------
3) =
49 : (2х - 5) = 86 - 79
49 : (2х - 5) = 7
2х - 5 = 49 : 7
2х - 5 = 7
2х = 7 + 5
2х = 12
х = 6
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Answers & Comments
Verified answer
1. =48 + к = 400 : 8
48 + к = 50
к = 50 - 48
к = 2
---------------------------
2, =
5,4у + 8,3 = 23,1 + 2,1
5,4у + 8,3 = 25,2
5,4у = 25,2 - 8,3
5,4у = 16,9
у = 169/54
у = 3 целых 7/54
---------------------------------------
3) =
49 : (2х - 5) = 86 - 79
49 : (2х - 5) = 7
2х - 5 = 49 : 7
2х - 5 = 7
2х = 7 + 5
2х = 12
х = 6