Question

If x-y=4 and 2x+y=5, what is the value of x?
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Answer 1

x=4 & y = -1

Step-by-step explanation:

x-y=4

x=4+y

now, 2x+y=5

2(4+y) + y=5 {by putting the value of x=4+y}

8+2y+y=5

8+3y=5

3y=5-8

y=-3/3

y= -1

putting the value of y in x-y=4

x-(-1) =5

x+1=5 {-(-) =+}

x=5-1

x=4