Ответ:
Пошаговое объяснение:
x+(7-2x) = 10
x + 7 - 2x = 10
-x +7 = 10
-x = 10 - 7
x = -3
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3x + 5 = -4x + 19
3x + 4x = 19 - 5
7x = 14
x = 14 : 7
x = 2
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x + 3(1 - 2x ) = 23
x + 3 - 6x = 23
-5x + 3 = 23
-5x = 23 - 3
-5x = 20
x = -20 : 5
x = -4
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1/3x - 1 = 1/4(x + 4/5)
1/3x - 1 = 1/4x + 1/5
1/3x - 1/4x = 1/5 + 1
4/12x - 3/12x = 1 1/5
1/12x = 1 1/5
x = 1 1/5 : 1/12
x = 6/5 * 12
x = 72/5
x = 14 2/5
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(3x + 2)/4 - (2x - 1)/3 = 2 /*12
3(3x + 2) - 4(2x - 1) = 2*12
9x + 6 - 8x + 4 = 24
x + 10 = 24
x = 24 - 10
x = 14