Question 157621
(z-7)+6=2.1(3z+1)
First you multiply.
z-7=6.2z+2.1
Now combine like terms.
z-6.2z=2.1+7
-5.2z=9.1
z=9.1/-5.2
z=-1.75 answer.
Proof:
-1.75-7=6.2*-1.75+2.1
-8.75=-10.85+2.1
-8.75=-8.75