solve the equation 7+3m=28 .
A.m=18
B.m=11 2/3
C.m=9
D.m=7
9 answers
I think a
Answer a is not correct. Which value for m makes the equation correct?
Then its not 21 and 21 is the awnser for 3m
7+3m=28
Subtract 7 from both sides.
3m = 21
Divide both sides by 3
m = 21/3
m = ?
Subtract 7 from both sides.
3m = 21
Divide both sides by 3
m = 21/3
m = ?
What I do is subtract the first number from the sum, 28-7=21 and go through the answer choices and multiply them by 3, since it is the number right next to m, and whatever gives you 21 is the answer. Example: 28-7=21, 18x3=54, so it's too much. Hope this helps!
Thanks miss sue you made it easier for me it is 7
Yay! You are welcome.
Thanks Ms. Sue! <3
Thank you miss sue