From the given information form simultaneous equations and solve

Read the information given. Form simultaneous equatons and solve:

From the given determinants, from two simultaneously equations and solve them. |{:(2,y),(-3,x):}|=7,|{:(3,y),(1,x):}|=5

Convert the following equations into simultaneous equations and solve: sqrt(x/y)=4,1/x+1/y=1/(xy) .

Solve the following simultaneous equations: x+y=8,x-y=2

Solve the following simultaneous equations using Cramer's rule. x+2y=-1,2x-3y=12 .

Solve the following simultaneous equations using Cramer's rule: 3x+y=1,2x=11y+3

Solve the sets of simultaneous equations: x+y=4, 2x-5y=1

Solve the simultaneous equations: 2x+y=5, 3xy=5

Solve the following simultaneous equations: x+y=8,x-y=2 .

Solve the following simultaneous equations. 2x+y=5 , 3x-y=5