Question 644353
1. 1/3x + 1/4y =10;

x/3 + 1/2^2y =10
x/3 + y/2^2 =10
4x+3y/3*2 =10
4x = -3y + 120
x = 3(-y+40)/4


2. 1/4x + 1/3y =11

1/2^2x + y/3 =11
x/2^2 + y/3 =11
3x+ 4y/2^2*3 =11
3x - 4y + 132
x = 4(-y+33)/3