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x + x/7 = -8
(7x + x)/7 = -8
8x/7 = -8
8x = -8 * 7
x = -56/8
x = -7
x + x/2 = -6
(2x + x)/2 = -6
3x/2 = -6
3x = -6 * 2
x = -12/3
x = -4
x + x/2 = 9/2
(2x + x)/2 = 9/2
3x/2 = 9/2
3x = 9/2 * 2
x = 9/3
x = 3
x + x/5 = -24/5
(5x + x)/5 = -24/5
6x/5 = -24/5
6x = -24/5 * 5
x = -24/6
x = -4
x + x/12 = 13/2
(12x + x)/12 = 13/2
13x/12 = 13/2
13x = 13/2 * 12
x = 78/13
x = 6
x + x/10 = -11/2
(10x + x)/10 = -11/2
11x/10 = -11/2
11x = -11/2 * 10
x = -55/11
x = -5
(7x + x)/7 = -8
8x/7 = -8
8x = -8 * 7
x = -56/8
x = -7
x + x/2 = -6
(2x + x)/2 = -6
3x/2 = -6
3x = -6 * 2
x = -12/3
x = -4
x + x/2 = 9/2
(2x + x)/2 = 9/2
3x/2 = 9/2
3x = 9/2 * 2
x = 9/3
x = 3
x + x/5 = -24/5
(5x + x)/5 = -24/5
6x/5 = -24/5
6x = -24/5 * 5
x = -24/6
x = -4
x + x/12 = 13/2
(12x + x)/12 = 13/2
13x/12 = 13/2
13x = 13/2 * 12
x = 78/13
x = 6
x + x/10 = -11/2
(10x + x)/10 = -11/2
11x/10 = -11/2
11x = -11/2 * 10
x = -55/11
x = -5
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№ 694 № 696 № 698
7х + х = - 56 2х + х = 9 12х + х = 13 * 6
8х = - 56 3х = 9 13х = 78
х = - 7 х = 3 х = 6
№ 695 № 697 № 699
2х + х = - 12 5х + х = - 24 10х + х = - 11 * 5
3х = - 12 6х = - 24 11х = - 55
х = - 4 х = - 4 х = - 5
7х + х = - 56 2х + х = 9 12х + х = 13 * 6
8х = - 56 3х = 9 13х = 78
х = - 7 х = 3 х = 6
№ 695 № 697 № 699
2х + х = - 12 5х + х = - 24 10х + х = - 11 * 5
3х = - 12 6х = - 24 11х = - 55
х = - 4 х = - 4 х = - 5
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ОК! ДО ЗАВТРА.
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