Question

第一题.4(X+Y)减去3(x减去y)=14 2分之x加y加3分之x减去y等于6

Answer 1

4（x+y)-3(x-y)=14

x+7y=14

(x+y)/2 + (x-y)/3 =6

两边同乘以6,得3(x+y)+2(x-y)=36

5x+y=36

则x+7(36-5x)=14

x=7,y=1