Question

Solve by crammers rule. 10x+5y=123 and 9x+12y=150

Answer 1

Step-by-step explanation:

3x−12y=30

3x=12y+30

3

3x

=

3

12y+30

x=4y+10

5y+10(4y+10)=100

5y+40y+100=100

45y+100=100

45

45y

=

45

100−100

y=0

3x−12(0)=30

3x=30

x=10

x=10,y=0