4分之(2X+1)-2分之(3X+1)=2 是解方程该怎么解要过程啊 2分之(5X+3)=3分之(1+7X)-1

2024-11-26 21:42:28
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回答1:

你好!

数学之美团为你解答

(2x+1)/4 -(3x+1)/2 = 2
两边同乘以4
(2x+1) - 2(3x+1) = 8
2x+1 - 6x - 2 = 8
- 4x = 9
x = - 9/4

(5x+3)/2 = (1+7x)/3 - 1
两边同乘以6
3(5x+3) = 2(1+7x) - 6
15x + 9 = 2+14x - 6
x = - 13