Question

解一道方程!3分之2(x-y)=4分之x+y-1 6(x+y)=4(2x-y)+16!

Answer 1

3分之2(x-y)=4分之x+y-1

6(x+y)=4(2x-y)+16

8(x-y)=3(x+y)-12

6(x+y)=4(2x-y)+16

5x-11y=-12

x=5y-8

5(5y-8)-11y=-12

25y-40-11y=-12

14y=28

y=2

x=2

方程组的解是{x=2 y=2