When we eliminate y,(by adding here), resulting equation would be:
2x - 14 =0
So, x = 7
You can find the value of y as well, by substituting the value of x,
7 - y -8 = 0
y = -1
Hope this helps!
4. 15 + 4x = 6 + 5x
-x = -9
x = 9
5. Sally : x , Martha : y
x = 2 + y
x + y = 5.64
2 + y + y = 5.64
2y = 3.64
y = 1.82
Sally paid $1.82.
6. Bob : x , Tim : y
x = y - 3
x + y =7.80
y - 3 + y = 7.80
2y = 10.80
y = 5.4
Bob spent $5.40.
The answer is B your welcome
