7f+5=68
14-3g=32
z/-2+5=7
12-2m+5=-1
2007-10-14 12:36:57 · 5 answers · asked by Jenny 1 in Education & Reference ➔ Homework Help
7f+5=68 for example:
first, you do the inverse [opposite] operation. since this is addition, you use subtraction. you always use the answer and the last thing you did ....... 68+5=73
now you have 7f=73. with that, you then do the inverse operation again. 7f is multiplication so you do 73 divided by 7. i suck at division so you can do that.
then you have f = your answer.
hope i could help!
2007-10-14 12:43:44 · answer #1 · answered by Missy 2 · 0⤊ 1⤋
the first one you subtract 5 from both sides.....
then divde both side by 7....
second one you subtract 14 from both sides.... then divde both sides by negative3
i dotn understand the third one...
the fourth one
you combineliek terms... so it woul dbe 17-2m = -1
so you subtract 17 from both sides.... then divide both sides by negative2
2007-10-14 19:43:25 · answer #2 · answered by Elizabeth G 1 · 0⤊ 1⤋
This is a great website for math help www.purplemath.com
2007-10-14 19:44:05 · answer #3 · answered by Audrey M 1 · 0⤊ 1⤋
solve them yourself, lazy KIDS
2007-10-14 19:45:32 · answer #4 · answered by Anonymous · 1⤊ 0⤋
7f+5=68
7f+5-5=68-5
7f=63
f=9
14-3g=32
14-14-3g=32-14
-3g=18
-3g/-3=18/-3
g=-6
z/-2+5=7
z/-2=2
z=-4
12-2m+5=-1
17-2m=-1
-2m=-18
-2m=-18
m=9
2007-10-14 20:11:21 · answer #5 · answered by Dave aka Spider Monkey 7 · 0⤊ 1⤋