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olgaguzieva499
@olgaguzieva499
August 2021
1
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10,11,12,13,15,16,17,18
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AdilkhanBest
#10
-2 + 2y = 11
2y = 13
Y = 6.5
#11
5x = 20
X = 4
#12
0.4y = -4
Y = -10
#13
1.5x - 2.1 = 0.6x + 9.6
0.9x = 11.7
x = 11.7 / 0.9 = 117 / 9 = 13
#15
(1.4x - 3.5) * (-1.5) = 0.25 * (4.6x - 18)
-2.1x + 5.25 = 1.15x - 4.5
3.25x = 9.75
X = 3
#16
29/9 * x - 29/12 = 7/3 * x - 7/4
8/9 * x = 8/12
X = 3/4 = 0.75
#17
5/12 - 4m = 4/3(3/2 * m - 3/8)
5/12 - 4m = 2m - 1/2
6m = 11/12
M = 11/72
#18
X1 = 0
(X - 5)(x + 2.5) = 0
X2 = 5
X3 = -2.5
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Answers & Comments
-2 + 2y = 11
2y = 13
Y = 6.5
#11
5x = 20
X = 4
#12
0.4y = -4
Y = -10
#13
1.5x - 2.1 = 0.6x + 9.6
0.9x = 11.7
x = 11.7 / 0.9 = 117 / 9 = 13
#15
(1.4x - 3.5) * (-1.5) = 0.25 * (4.6x - 18)
-2.1x + 5.25 = 1.15x - 4.5
3.25x = 9.75
X = 3
#16
29/9 * x - 29/12 = 7/3 * x - 7/4
8/9 * x = 8/12
X = 3/4 = 0.75
#17
5/12 - 4m = 4/3(3/2 * m - 3/8)
5/12 - 4m = 2m - 1/2
6m = 11/12
M = 11/72
#18
X1 = 0
(X - 5)(x + 2.5) = 0
X2 = 5
X3 = -2.5