Question

Solve the equations by Cramer's Rule:5x-6y+9=0, 7x+4y=37

Answer 1

Answer:

x=3, y=4

Step-by-step explanation:

first find det A

detA=62

then find det A1= replace first column from A and put constant column matrix

after find determinant

that's detA1=186

find Det A2= replace second column from A and put constant column matrix

after find determinant

detA2= 248

x= Det A1 / Det A = 186/62=3

y= Det A2 /Det A= 248/62=4