Answer: x=2, y=6: correct answer is B
Step-by-step explanation:
2x+5y=34............(1)
x+2y=14..............(2)
Using substitution method
Make x the subject of formula in equation 2
x=14-2y................(3)
Substitute equation 3 into equation 1
2(14-2y)+5y=34
28-4y+5y=34
28+y=34
Make y the subject of the formula
y= 34-28
y=6
To find x substitute y=6 into equation 1
2x+5y=34
2x+5(6)=34
2x+30=34
2x=34-30
2x= 4
x=4/2
x=2