what do u have to search for?
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:
m=2-2
m=0
Step-by-step explanation:
U need to do substitution
So u carry both 2 from that side to cross the equal to sign. One becomes positive because it is carrying a negative sign at the other side