Solve the system of linear equations below.

6x + 3y = 33
4x + y = 15

Question

Solve the system of linear equations below.


6x  +  3y  =  33
4x  +   y  =  15

anonymous · Answer

substitute the value of y in the second equation from the first

anonymous · Answer

6x  +  3y  =  33
4x  +   y  =  15     | *-3

Can you do it now?

anonymous · Answer

6x   +    3y    =   33.............(1)
4x    +     y     =   15...............(2)

multiply (2) by 3
3*(4x + y = 15)



12x        +         3y      =       45..........(3)
6x          +         3y       =      33


subtract


6x = 12
x=2


substitute x = 2 in an equation and solve for Y
 y =7