Question

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

Answer 1

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