problem: 2x + 7 = 79
my answer : x = 36
thanks
2007-09-13 13:10:40 · 11 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
2x = 72
x = 36 is correct.
2007-09-15 07:56:16 · answer #1 · answered by Como 7 · 2⤊ 0⤋
2x + 7 = 79
2x + 7 - 7 = 79 - 7
2x = 72
x = 36
2007-09-13 20:12:55 · answer #2 · answered by Anonymous · 2⤊ 1⤋
yes
to check, just substiute 36 for x
2(36) + 7 +79
72 + 7 =79
79=79
2007-09-13 20:14:58 · answer #3 · answered by yankeesrus07 2 · 0⤊ 1⤋
yes!! 36 is the correct answer.
2007-09-13 20:13:31 · answer #4 · answered by Anonymous · 0⤊ 0⤋
2 x 36 = 72
72 +7 = 79
looks good to me, whenver you are in doubt about your answer, plug it in, and see if it works, if it does congratulations, you got it right! if not try again
2007-09-13 20:16:58 · answer #5 · answered by Andrew F 2 · 0⤊ 1⤋
2X+7=79_______ Recheck: 2(36) + 7= 79
__-7 = -7________________72 +7=79
2X=79___________________79 =79
2x/2=79/2
x=36
2007-09-13 20:23:19 · answer #6 · answered by the_dempire 2 · 0⤊ 1⤋
yes
2007-09-13 20:14:38 · answer #7 · answered by Anonymous · 0⤊ 0⤋
yeah
2007-09-13 20:12:37 · answer #8 · answered by Anonymous · 0⤊ 0⤋
yes, you're right.
2007-09-13 20:14:09 · answer #9 · answered by Kammie54 3 · 0⤊ 0⤋
yes, your smart you are right
=]]
2007-09-13 20:13:29 · answer #10 · answered by =] 2 · 0⤊ 1⤋