heres another one i cant figure out?!
Solve the equation. Enter your answer as an equation that shows the value of the variable (like s = 2/3, or 4 = w).
4x - 7 = -15
why am i not good at math?!!?
2009-04-02 3:28 pm
回答 (5)
2009-04-02 3:31 pm
✔ 最佳答案
4x - 7 = -154x = -15 +7
4x = -8
x = -8/4
x = -2
2009-04-02 4:23 pm
4x - 7 = -15
4x = 7 - 15
x = -8/4
x = -2
4x = 7 - 15
x = -8/4
x = -2
2009-04-02 3:42 pm
4x - 7 = - 15
Adding 7 on both sides
4x - 7 + 7 = - 15 + 7
4x = - 8
Dividing by 4 on both sides
4x / 4 = - 8 / 4
x = - 2
Thats it dear.
And u r nt gud at it coz u dont concentrate in the class and dont practice at home.
Adding 7 on both sides
4x - 7 + 7 = - 15 + 7
4x = - 8
Dividing by 4 on both sides
4x / 4 = - 8 / 4
x = - 2
Thats it dear.
And u r nt gud at it coz u dont concentrate in the class and dont practice at home.
2009-04-02 3:41 pm
4x-7=-15
4x=-15+7
4x=-8
x=-2
4x=-15+7
4x=-8
x=-2
參考: chec k my answer here:
http://www.mathway.com/answer.aspx?p=trig?p=4xSMB15-SMB157SMB15SMB01SMB15-15?p=1?p=?p=?p=?p=?p=?p=?p=0?p=?p=
2009-04-02 3:37 pm
4x - 7 = -15
add 7 to both sides
4x = -15 +7
4x = -8
then divide both sides by 4 to get x alone
x = -8/4 so x = -2
add 7 to both sides
4x = -15 +7
4x = -8
then divide both sides by 4 to get x alone
x = -8/4 so x = -2
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