Question

Solve each equation.

9(z-3) = 12z

7y+5 = 6y + 11

5w+8 - 12w = 16 - 15w

3(x+1) = 2(x+11)

Answer 1

Are these a system of equations or are just solve each equation for the included variable?

Answer 2

Each one is a different equation.

Answer 3

Hi,
here's the basic to solve them....
u first have to remove the brackets of each equation by multiplying them by the given number..
for an example if there was
9(x + 3) u have to simplify it to (9x) + (9x3) = 9x+27
then u can add or subtract like terms in the equation...
which mean for an instance...
4x + 5 + x +6
here u can add 4x to x and get 5x .... but u cant add 4x to 5,6...
then u can get the expression
5x + 11

and finally to solve them.. u have keep doing this until u have only 2 terms in the equation... one is known and other one is unknown...
5y = 15 like that
then u can divide both sides by a suitable no and get the value for the unknown term....
5y/5 = 15/5
y = 3

so to help ya... wt will be ur 1st equation if u remove the brackets of it as I mentioned above ?