Question

1)0,7х=-4.2 ПОМОГИТЕ!!!! 2)-1.4-5.63)4/5х=14)1/3х=-2/95)3/4х=-126)3х=77)-2.1/2х=7/15

Answer 1

Х=-6 ;-7 1 целая1 четвёртая

Answer 2

1) 0.7x=-4.2

x=6

2)-1,4-5,6=7

3)4/5x=1

4=5x

x=0.8

4)9=-6x

x=-1.5

5)3=-48x

x=- 1/16

6)3x=7

x=7/3

7)-2.1/2x=7/15

140x= -315

x=-9/4

Answer 3

Sure, I can help you solve these equations step-by-step. Let's go through each one:

1. 0.7x = -4.2

To solve for x, divide both sides of the equation by 0.7:

x = -4.2 / 0.7 x = -6

2. -1.4 - 5.6x = 0

To solve for x, first, isolate the term with x on one side of the equation:

-5.6x = 1.4

Now, divide both sides by -5.6:

x = 1.4 / -5.6 x = -0.25

3. (4/5)x = 14

To solve for x, multiply both sides of the equation by the reciprocal of (4/5), which is 5/4:

x = 14 * (5/4) x = 70/4 x = 17.5

4. (1/3)x = -2/9

To solve for x, multiply both sides of the equation by the reciprocal of (1/3), which is 3:

x = -2/9 * 3 x = -2/3

5. (3/4)x = -12

To solve for x, multiply both sides of the equation by the reciprocal of (3/4), which is 4/3:

x = -12 * (4/3) x = -48/3 x = -16

6. 3x = 7

To solve for x, divide both sides of the equation by 3:

x = 7 / 3

7. (-2.1/2)x = 7/15

To solve for x, multiply both sides of the equation by the reciprocal of (-2.1/2), which is -2/2.1:

x = (7/15) * (-2/2.1) x = -14/31.5

These are the solutions for each of the given equations. If you have any more questions or need further assistance, feel free to ask!