Question

а)(-x):(-2.1)=0.15. б) 0.7:(-x)=2.8. в)(-0.5):x=-1.25. г)-1.21:x=0.11

Answer 1

1) х= 0,15*(-2.1)
   х= -0.315
2) х=0.7:2.8
    х= 0.25
3) х= -1.21:0.11
    х= -11

Answer 2

А)(-х):(-2,1)=0,15
х:2,1=0,15
х=0,15*2,1
х=0,315
б)0,7:(-х)=2,8
-х=0,7:2,8
х=-0,25
в)(-0,5):х=-1,25
х=(-0,5):(-1,25)
х=0,4
г)-1,21:х=0,11
х=-1,21:0,11
х=-11

Answer 3

Let's solve each of the equations step by step:

а) (-x):(-2.1) = 0.15

To simplify this equation, we can multiply both sides by (-2.1) to eliminate the denominators:

(-x) * (-2.1) = 0.15 * (-2.1)

2.1x = -0.315

Now, divide both sides by 2.1 to solve for x:

x = -0.315 / 2.1

x ≈ -0.15

Therefore, the solution to equation (a) is x ≈ -0.15.

б) 0.7:(-x) = 2.8

To simplify this equation, we can multiply both sides by (-x) to eliminate the denominators:

0.7 * (-x) = 2.8 * (-x)

-0.7x = -2.8x

We can divide both sides by -0.7 to solve for x:

x = -2.8x / -0.7

x = 4

Therefore, the solution to equation (b) is x = 4.

в) (-0.5):x = -1.25

To simplify this equation, we can multiply both sides by x to eliminate the denominators:

(-0.5) * x = -1.25 * x

-0.5x = -1.25

Now, divide both sides by -0.5 to solve for x:

x = -1.25 / -0.5

x = 2.5

Therefore, the solution to equation (в) is x = 2.5.

г) -1.21:x = 0.11

To simplify this equation, we can multiply both sides by x to eliminate the denominators:

-1.21 * x = 0.11 * x

-1.21 = 0.11x

Now, divide both sides by 0.11 to solve for x:

x = -1.21 / 0.11

x ≈ -11

Therefore, the solution to equation (г) is x ≈ -11.

To summarize: а) x ≈ -0.15 б) x = 4 в) x = 2.5 г) x ≈ -11