Need help with these questions. Any tips?

1)

Isolate for the variable m

-13 = 5  + 20m -2m

-13 = 5 + 18 m

-18 = 18 m

m = -18/18

m = -1

2) same thing

11 + 8r = -r +29

8r + r = 29 - 11

9r = 18

r = 18 / 9

r = 2

3) same thing

4x +6 +3 = 17

4x = 17 - 6 - 3

4x = 17 - 9

4x = 8

x = 8 /4

x =2

4) Same thing

-8(-8x - 6) = -6x -22

64x +48 = -6x -22

64x +6x = -22 -48

70x = -70

x= -70/70

x = -1

I would go through these on your own to make sure that you understand.

Step-by-step explanation:

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80

a

step-by-step explanation:

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