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manatromanov
@manatromanov
July 2022
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1) 12(y-3)+0,8y
2) 9,6(2+x)+0,4x
3) 1,7(4+y)+1,3y
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Віктор385
Verified answer
1) 12(y-3)+0,8y
раскроем скобки
12у - 36 + 0.8у
12 у + 0,8 у = 12,8у
12,8у = 36
у = 36 : 12,8
у = 2,8
2) 9,6(2+x)+0,4x
раскроем скобки
19,2 + 9,6х + 0,4х
10х = 19,2
х = 19,2 : 10
х = 1,92
3) 1,7(4+y)+1,3y
раскроем скобки
6,8 + 1,7у + 1,3у
6,8 = 3у
у = 6,8 : 3
у = 2,26
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Answers & Comments
Verified answer
1) 12(y-3)+0,8yраскроем скобки
12у - 36 + 0.8у
12 у + 0,8 у = 12,8у
12,8у = 36
у = 36 : 12,8
у = 2,8
2) 9,6(2+x)+0,4x
раскроем скобки
19,2 + 9,6х + 0,4х
10х = 19,2
х = 19,2 : 10
х = 1,92
3) 1,7(4+y)+1,3y
раскроем скобки
6,8 + 1,7у + 1,3у
6,8 = 3у
у = 6,8 : 3
у = 2,26