Question

1. alicia and jamal completed the following "
given : 3x+7=x-5
prove: x=-6
who completed the proof correctly?

Answer 1

I can't see how each one completed it...but I would do it this way..
3x + 7 = x - 5 --- subtract x from each side
3x - x + 7 = -5 -- now subtract 7 from both sides
3x - x = -5 - 7 -- now simplify
2x = - 12 -- now divide both sides by 2
x = -6

Answer 2

but there are other ways

Answer 3

this is how
3x+7=x-5 : given
2x+7=-5: subtraction property of equality
2x=-12: subtraction property of quality
x=-6: division property of equality

for alicia

Answer 4

and jamals

3x+7=x-5 : given
7=-2x-5 : subtraction property of equality
12=-2x: addition property of equality
-6=x : division property of equality

Answer 5

a) alicia only
b) jamal only
c) both alicia and jamal
d) neither alicia nor jamal

Answer 6

oh....they both look correct to me....glad you put the answer choices...I was thinking there could only be one of them right..lol....they are both correct

Answer 7

thanks so much

Answer 8

sure thing :)