1)x*15-2.7=0.32)0,7*х-10=-5,13)-5,6*х+9=-5

Question

1)x*15-2.7=0.3
2)0,7*х-10=-5,1
3)-5,6*х+9=-5

Answer 1

1) x*15-2.7=0.3
15х = 0.3 + 2.7
15х =  3 
х =  0,2

2)0,7*х-10=-5,1
0,7х = -5,1 +10
0,7х =  4,9
 х =  7

3)-5,6* х+9=-5
 - 5,6х = -5 -9
-5,6 х = - 14
 х =  2,5

Comments

1) |x| * 15 - 2.7 = 0.3
15x = 0.3 + 2.7
15x = 3 15x = -3
x = 3 / 15 x = -3/15
x = 0.2 x = -0.2

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egc

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упс

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1) |x| * 15 - 2.7 = 0.3
15x = 0.3 + 2.7
15x = 3
x = 3 / 15 x
x = 0.2 x

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а вот его второе решение:
1) 15x = -3
x = -3/15
x = -0.2