Given the equation 5x + 23 = − 2x − 12, which order of operations completely solves for x?

Add 2x, then subtract 23, lastly divide by - 7

Subtract 2x, then add −23, lastly divide by 7

Subtract 5x, then add12, lastly divide by 7

Subtract 5x, then add 12, lastly divide by −7

Question

Given the equation 5x + 23 = − 2x − 12, which order of operations completely solves for x?

 Add 2x, then subtract 23, lastly divide by - 7

 Subtract 2x, then add −23, lastly divide by 7

 Subtract 5x, then add12, lastly divide by 7

 Subtract 5x, then add 12, lastly divide by −7

anonymous · Answer

Well let's try it out so you can see for yourself ?

jenniferjuice · Answer

@Shay17 okay !

anonymous · Answer

You can't start off by subtracting 2x because it's already negative so let's eliminate B. !

anonymous · Answer

Now let's see what happens if we add 2x

anonymous · Answer

|dw:1403053859464:dw|

anonymous · Answer

So A is also wrong because we divide by positive 7 not negative 7 !

anonymous · Answer

Now let's see what happens when we subtract 5x : )

anonymous · Answer

|dw:1403054280712:dw|

anonymous · Answer

So what choice is your answer ? @jenniferjuice

jenniferjuice · Answer

D ?

anonymous · Answer

Correct because we divide by -7 not positive 7 so that eliminates C ! Great choice

jenniferjuice · Answer

@Shay17  thank you so much :)

anonymous · Answer

You are very welcome :p