How many solutions does the equation −4a + 4a + 3 = 8 have?

Two
None
Infinitely many
One

How many solutions does the equation 6s − 3s − 9 = −2 + 3 have?

Zero
One
Two
Infinite solutions

Question

How many solutions does the equation −4a + 4a + 3 = 8 have?

Two
None
Infinitely many
One

How many solutions does the equation 6s − 3s − 9 = −2 + 3 have?

Zero
One
Two
Infinite solutions

theopenstudyowl · Answer

none, the a variables cancel out...

yanasidlinskiy · Answer

Combine like terms first to get your final answer. What have you tried?

theopenstudyowl · Answer

the second one has one

nathaliama13 · Answer

Can you guys tell me how you got the answer? I mean, I'm doing a lesson and I haven't gotten how to do it. as much times that I go over it. ??

theopenstudyowl · Answer

-4a+4a = 0, how hard is that?

theopenstudyowl · Answer

the answer is no solution

nathaliama13 · Answer

how about the 3?

theopenstudyowl · Answer

when the variables cancel out, then that is it!  The variables must exist in order for the equation to be solved.

nathaliama13 · Answer

I'm getting it now, Thanks !! :-)

yanasidlinskiy · Answer

Do you still need an explanation?