-3(x+5)+3=12?

2008-07-19 2:48 am

回答 (7)

2008-07-19 2:51 am

✔ 最佳答案

-3x-15+3 = 12
-3x -12 = 12
-3x -12 + 12= 12 +12
-3x = 24
-3x/-3 = 24/-3

Therefore

x = 8

👍 1 👎 3

2008-07-19 9:57 am

-3x - 15 + 3 = 12
-3x - 12 = 12
-3x = 24

therefore x = -8

👍 2 👎 1

2008-07-19 9:56 am

Subtract 3 from both sides
-3(x+5)=9
Divide by -3
x+5=-3
Subtract 5 from both sides
x=-8

👍 2 👎 1

2008-07-19 9:51 am

-3x - 15 + 3 = 12

-3x - 12 = 12

-3x = 24

solve for x

👍 1 👎 0

2008-07-21 2:29 am

- 3x - 15 + 3 = 12
- 3x = 24
x = - 8

👍 0 👎 0

2008-07-19 4:40 pm

-3(x + 5) + 3 = 12
-3*x - 3*5 + 3 = 12
-3x - 15 + 3 = 12
-3x = 12 - 3 + 15
-3x = 24
x = 24/-3
x = -8

👍 0 👎 0

2008-07-19 10:01 am

-3x-15=9
-3x=24
x-8

👍 0 👎 0