Respuesta :

1) 21.2

2) 32

3) 13

4) 5.25

Did you need to show the working?

Answer:

1. w=21.2

2. j=96

3. z=13

4. k=7.56

Step-by-step explanation:

To solve an equation with a variable, we need to simplify. We can simplify an equation by adding and subtracting numbers to eachother on both sides.

For the first one, simply subtract 2.5 from both sides, to get w by itself.

w+2.5=23.7

  -2.5   -2.5

w=21.2

For the second one, add 32 on both sides, because on the left side it is negative, and adding it will cancel it out.

j-32=64

+32+32

j=96

For the third one, divide both sides by 5 to isolate z.

z=13

Lastly, multiply both sides by 1.2 to isolate k.

k=7.56

Hope this helps!