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JekeOloKu
@JekeOloKu
July 2022
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1)x+8/5 - 5x+1/3=9
2)x+18/4 - 4x-3/3=7
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Dимасuk
Verified answer
1) (x + 8)/5 - (5x + 1)/3 = 9
Умножим всё уравнение на 15:
3(x + 8) - 5(5x + 1) = 135
3x + 24 - 25x - 5 = 135
-22x = 135 + 5 - 24
-22x = 116
x = -58/11 = -5 3/11
2) (x + 18)/4 - (4x - 3)/3 = 7
Умножив всё уравнение на 12:
3(x + 18) - 4(4x - 3) = 84
3x + 54 - 16x + 12 = 84
-13x = 84 - 12 - 54
-13x = 18
x = -18/13 = -1 5/13
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Answers & Comments
Verified answer
1) (x + 8)/5 - (5x + 1)/3 = 9Умножим всё уравнение на 15:
3(x + 8) - 5(5x + 1) = 135
3x + 24 - 25x - 5 = 135
-22x = 135 + 5 - 24
-22x = 116
x = -58/11 = -5 3/11
2) (x + 18)/4 - (4x - 3)/3 = 7
Умножив всё уравнение на 12:
3(x + 18) - 4(4x - 3) = 84
3x + 54 - 16x + 12 = 84
-13x = 84 - 12 - 54
-13x = 18
x = -18/13 = -1 5/13