Ответы
Ответ:
Пошаговое объяснение:
4(x - 3) = x + 6
4x - 12 = x + 6
4x - x = 6 + 12
3x = 18
x = 18:3
x = 6
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4 - 6(x+2) = 3 - 5x
4 - 6x - 12 = 3 - 5x
-8 - 6x = 3 - 5x
6x - 5x = -8 - 3
x = -11
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(5x + 8) - (8x + 14) = 9
5x + 8 - 8x - 14 = 9
-3x - 6 = 9
3x = -6 - 9
3x = -15
x = -15 : 3
x = -5
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2,7 + 3y = 9(y - 2,1)
2,7 + 3y = 9y - 18,9
9y - 3y = 2,7 + 18,9
6y = 21,6
y = 21,6 : 6
y = 3,6
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0,3(8 - 3y) = 3,2 - 0,8(y - 7)
2,4 - 0,9y = 3,2 - 0,8y + 5,6
2,4 - 0,9y = 8,8 - 0,8y
0,9y - 0,8y = 2,4 - 8,8
0,1y = -6,4
y = -6,4 : 0,1
y = -64
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5/6(1/3x -1/5) = 3x + 3 1/3
5/18x - 1/6 = 3x + 3 1/3
3x - 5/18x = -1/6 - 3 1/3
2 13/18x = -1/6 - 3 2/6
2 13/18x = -3 1/2
x = -3 1/2 : 2 13/18
x = -7/2 : 49/18
x = -7/2 * 18/49
x = -9/7
x = -1цел. 2/7
все решили !!!!!!!!!!!!!
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