Solve -2(-3x - 8) = 4.?
回答 (4)
2012-05-04 1:26 pm
✔ 最佳答案
-2(-3x - 8) = 46x+16=4
6x+16-16=4-16
6x=-12
x=-2
hope this helps!(the equal signs are in one line!!!)
2012-05-04 8:25 pm
-2(-3x-8) = 4
(-3x-8) = -2 (both sides :-2)
-3x = 6 (both sides +8)
x = -2 (both sides :-3)
I think what you need is to remember that minus*minus = plus, and plus:minus = minus. :)
(-3x-8) = -2 (both sides :-2)
-3x = 6 (both sides +8)
x = -2 (both sides :-3)
I think what you need is to remember that minus*minus = plus, and plus:minus = minus. :)
2012-05-04 8:28 pm
-2(-3x - 8) = 4
(-2)*(-3x) + (-2)*(-8) = 4
6x + 16 = 4
6x = 4 - 16
6x = -12
x = -12/6
x=-2
(-2)*(-3x) + (-2)*(-8) = 4
6x + 16 = 4
6x = 4 - 16
6x = -12
x = -12/6
x=-2
參考: I even verified the answer with a calculator
2012-05-04 8:27 pm
-2(-3x - 8) = 4
=> 6x + 16 = 4
=> 6x = 4 - 16
=> 6x = -12
=> x = -12/6
=> x = -2
I think you always get wrong due to signs. Remember that a minus by a minus gives you a plus. While minus by a plus gives you a minus.
=> 6x + 16 = 4
=> 6x = 4 - 16
=> 6x = -12
=> x = -12/6
=> x = -2
I think you always get wrong due to signs. Remember that a minus by a minus gives you a plus. While minus by a plus gives you a minus.
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