85z-27-19(1+z)=43(1-z)+91+91z помогите

Question

85z-27-19(1+z)=43(1-z)+91+91z помогите

Answer 1

85z-27-19-19z=43-43z+91+91z
85z-19z+43z-91z=43+91+27+19
18z=180
z=180:18
z=10