Answer:
Step-by-step explanation:
given:
x=3 and y=-4
to find:
4x-y
substitute the value of x and y
=4*3-(-4)
=12+4
=16
-x+y
substitute the vaue of x and y
=-3+(-4)
=-3-4
=-7
7-y-x
substitute the value of x and y
=7-(-4)-3
=7+4-3
=11-3
=8
Hope this helps u !!
