whats the salution to 6(x-2)=-4(2x+7)?
回答 (12)
✔ 最佳答案
6x-12=-8x-28
14x=-16
x=-16/14
x=-8/7
6(x - 2) = - 4(2x + 7)
6x - 12 = - 8x - 28
14x = - 16
x = - 16/14 or - 8/7
Answer: x = - 8/7
Proof:
6(- 8/7 - 2) = - 4(2[- 8/7] + 7)
6(- 8/7 - 14/7) = - 4(- 16/7 + 49/7)
6(- 22/7) = - 4(33/7)
- 132/7 = - 132/7
6(x-2)=-4(2x+7)
6x - 12 = -8x - 28
6x + 8x = -28 + 12
14x = -16
x = -16/14
x = -8/7 <===Answer
6(x - 2) = -4(2x + 7)
6*x - 6*2 = -4*2x - 4*7
6x - 12 = -8x - 28
6x + 8x = 12 - 28
14x = -16
x = -16/14
x = -8/7
6(x-2)=-4(2x+7)
divide by 2
3(x-2)=-2(2x+7)
3x-6 =-4x-14
7x = -8
x = -7/8 ****Answer
6(x-2)=-4(2x+7)
6x - 12 = -8x - 28
6x + 8x = -28 + 12
14x = -16
x = -16/14
x = -8/7(ANS)
6(x-2) = -4(2x+7)
6x-12 = -8x - 28
6x + 8x = -28+ 12
14x =-16
x = -16/14 = -8/7
參考: myself
6(x-2)=-4(2x+7)
6x-12=-8x-28 distribute using FOIL pattern
14x=-16 add 12 to both sides and add 8
x=-16/14 divide from both sides 14
6 x - 12 = - 8 x - 28
14 x = - 16
7 x = - 8
x = - 8 / 7
6(x-2)=-4(2x+7)
6x-12=-8x-28
14x=-16
x=-8/7
收錄日期: 2021-05-01 12:30:58
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