Algebra Question - How do you solve this equation? -7m + 10 < 25?

2008-12-01 10:09 am
Please explain using words and numbers.

回答 (9)

2008-12-01 10:13 am
✔ 最佳答案
-7m + 10 < 25

-7m < 25 - 10 =15


-7m < 15

m > 15 / -7 [Note change in inequality]

2008-12-01 6:17 pm
- 7m + 10 < 25
- 7m < 15
- m < 15/7
m > - 15/7

Answer: m > - 15/7
2008-12-01 9:51 pm
you solve it just like you would a regular equation

jus the only difference is that wen u divide by a -ve #; you switch the sign


-7m + 10 < 25
-7m < 25 - 10
-7m < 15
m > 15/-7

so u'd get m> -15/7

which is -(2 1/7) = -2.142
2008-12-01 6:42 pm
-7m+10<25
-7m+10-10<25-10
-7m<15
-7m/-7<15/-7
m>- 7/15
2008-12-01 6:29 pm
-7m + 10 < 25
-7m < 25 - 10
-7m < 15
m > 15/-7
m > -15/7
2008-12-01 6:23 pm
-7m+10<25
-7m<25-10 transfer 10 to the other side. the sign will change from + to -
-7m<15
divide both sides by -7
m> -2.14
(it is change to "greater than" sign because it is divided by a negative number)
參考: just my knowledge
2008-12-01 6:23 pm
-7m < 15; subtract 10 from both sides
m > -15/7; divide both sides by -7; reverse the inequality since you divided by a negative number.
2008-12-01 6:18 pm
-7m + 10 < 25
-7m < 15
m > -15/7
2008-12-01 6:13 pm
- 7 m < 15
7 m > - 15
m > - 15 / 7


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