Question

【1】五分之x+4-(x-5)=二分之x-2 【2】2分之1[x+3分之4【x-1】=3分之2【x-1】+3

Answer 1

【1】五分之x+4-(x-5)=二分之x-2

都乘以10得,2(x+4)-10(x-5)=5(x-2)

2x-10x-5x=-10-8-50

-13x=-68

x=68/13

【2】2分之1[x+3分之4【x-1】=3分之2【x-1】+3

都乘以6得,3[x+4(x-1)/3]=4(x-1)+18

3x+4x-4=4x-4+18

3x=18

x=6