8th grade
posted by Sara .
I am having trouble with these kinds of problems and I ask my teacher but he doesnt explain it good enough. Will you please tell me step by step instructions to solve this type of problem...
2(z + 11)=6
thank you

multiply the parenthesis by 2
2z22=6
add 22 to each side.
2z=28
divide both sides by 2
z=14 
2(z + 11)=6
First, multiply:
2z  22 = 6
Then, to combine like terms, add 22 to both sides of the equation.
2z  22 + 22 = 6 + 22
2z = 28
z = 14
You can prove this answer by substituting 14 for z in your original problem.