Question

1)-2х=3/7 2)-х=-2 5/8 3) -3=-1/3х 4)-2/5х=3/10 5) 0,53х=-47,7 6) 3х+2=0 7) 3-5х=0 8)0,6х+1,8=0 9)7-0,7х=0 10)8х-5=х-40 11)7t+2l=t-3 12)9+13y=35+26y 13)0,3р-5=6-0,7р 14)8,3lk-71=1,11k+1 15)9с+2,65=36,85-9с

Answer 1

1) x = -3/14

2) x = 2,625

3) x = -1/9

4) x = -1 1/3

5) x = -48,26

6) x = -2/3

7) x = 0,6

8) x = -3

9) x = 10

10) x = -5

11) t = -3/8

12) y = -2

13) p = 11

14) k = -9,7357441

15) c = 2 1/6

Answer 2

To solve each equation, I will perform the necessary steps to isolate the variable on one side of the equal sign. Let's go through each equation one by one:

1. -2x = 3/7

To solve for x, divide both sides by -2:

x = (3/7) / (-2) x = -3/14

2. -x = -2 5/8

To solve for x, multiply both sides by -1:

x = 2 5/8

3. -3 = -1/3x

To solve for x, multiply both sides by -3:

x = (-1/3) * (-3) x = 1

4. -2/5x = 3/10

To solve for x, multiply both sides by -5/2:

x = (3/10) * (-5/2) x = -3/4

5. 0.53x = -47.7

To solve for x, divide both sides by 0.53:

x = -47.7 / 0.53 x = -90

6. 3x + 2 = 0

To solve for x, subtract 2 from both sides and then divide by 3:

3x = -2 x = -2 / 3

7. 3 - 5x = 0

To solve for x, subtract 3 from both sides and then divide by -5:

-5x = -3 x = (-3) / (-5) x = 3/5

8. 0.6x + 1.8 = 0

To solve for x, subtract 1.8 from both sides and then divide by 0.6:

0.6x = -1.8 x = (-1.8) / 0.6 x = -3

9. 7 - 0.7x = 0

To solve for x, subtract 7 from both sides and then divide by -0.7:

-0.7x = -7 x = (-7) / (-0.7) x = 10

10. 8x - 5 = x - 40

To solve for x, first, get all the x terms on one side and constants on the other side:

8x - x = -40 + 5 7x = -35

Now, divide by 7:

x = -35 / 7 x = -5

11. 7t + 2l = t - 3

To solve for t, first, get all the t terms on one side and constants on the other side:

7t - t = -3 - 2l 6t = -3 - 2l

Now, divide by 6:

t = (-3 - 2l) / 6

12. 9 + 13y = 35 + 26y

To solve for y, first, get all the y terms on one side and constants on the other side:

13y - 26y = 35 - 9 -13y = 26

Now, divide by -13:

y = 26 / -13 y = -2

13. 0.3p - 5 = 6 - 0.7p

To solve for p, first, get all the p terms on one side and constants on the other side:

0.3p + 0.7p = 6 + 5 1p = 11

Now, p is the same as just 1, so:

p = 11

14. 8.3lk - 71 = 1.11k + 1

To solve for k, first, get all the k terms on one side and constants on the other side:

8.3lk - 1.11k = 1 + 71 (8.3l - 1.11)k = 72

Now, divide by (8.3l - 1.11):

k = 72 / (8.3l - 1.11)

15. 9c + 2.65 = 36.85 - 9c

To solve for c, first, get all the c terms on one side and constants on the other side:

9c + 9c = 36.85 - 2.65 18c = 34.2

Now, divide by 18:

c = 34.2 / 18 c = 1.9

Please double-check the results to ensure accuracy.