How many solutions does this equation have?

Hello from MrBillDoesMath!

infinite solutions

Discussion: I did a double take on this one but  the left hand is

a + 3 + 2a =  3a +3

and the right hand side is

-1 + 3a + 4 = 3a + (4-1) = 3a + 3

The left and right sides of the equation are identical for all "a", i.e. for infinitely many "a" values.

Regards, MrB.

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^