A+A - 3A= -2A+22

Question

A + A - 3 A = -2 + 22

 

Answer 1

Your question title says A+A - 3A= -2A+22. Combine like terms on the left to get

-A = -2A + 22

Add 2A to both sides to get

A = 22

The equation below the title is a little different: A + A - 3 A = -2 + 22

Combining like terms on both sides gives -A = 20, thus in this case, A = -20.

 

 

Answer 2

This linear equation has variables on both sides of the equation. Follow this simple process process to solve for A.

1) The ultimate goal is to isolate the variable term (usually on the left hand side, but it makes no difference), and constant terms on the other side. To do that, let's first simplify the equation by collecting like terms on each side.

For the LHS: A + A gives 2A, minus 3A gives -A.

For the RHS: -2A + 22 there are no like terms to collect.

So, -A = -2A + 22

Now let's add 2A to the RHS and 2A to the LHS.

So, -A + 2A = 22

Collect like terms, 

A = 22