I'm assuming you want us to solve for the unknown variable z

Combine like terms on the right side

Use the distributive property on the left side

Add both sides by 20 to cancel out the "-20" on the left side

Divide both sides by 10

That is the value of the known variable, z, in this equation. Let me know if you need any clarifications, thanks!
~ Padoru
Answer:
2240
Step-by-step explanation:
I think you find 3% of 2000 which is 60
Then you multiply that by 4 which is 240
Add it to the 2000
and get 2240
Answer:
4
Step-by-step explanation:
5 : ? = 40 : 32
40 / 5 = 8
32 / 8 = 4
Answer:
c=4
Step-by-step explanation:
–2c = –c − 4
add c to both sides
-1c=-4
divide both sides by -1
c=4