Answer:
Let's solve your system of equations by elimination.
8x+9y=48;12x+5y=21
Steps:
Multiply the first equation by 5,and multiply the second equation by -9.
5(8x+9y=48)
−9(12x+5y=21)
Becomes:
40x+45y=240
−108x−45y=−189
Add these equations to eliminate y:
−68x=51
Then solve−68x=51for x:
−68x /−68 = 51 /−68 (Divide both sides by -68)
x= −3 /4
Now that we've found x let's plug it back in to solve for y.
Write down an original equation:
8x+9y=48
Substitute
−3 /4
8x+9y=48:
8( −3 /4 )+9y=48
9y−6=48 (Simplify both sides of the equation)
9y−6+6=48+6 (Add 6 to both sides)
9y=54
9y /9 = 54 /9 (Divide both sides by 9) y=6
Answer: x= −3 /4 and y=6
Hope This Helps! Have A Nice Day!!