Question

2 solve pllzz very fast

Answer 1

x+y=86
x-y=18
Do subtraction
2y=68
y=34
x+34=86
x=86-34
x=52
the numbers are 34 and54

Answer 2

suppose that two number are

X and Y

by using condition of problem

X - Y = 18 .........(1)

and

X + Y = 86 .........(1)

add equation 1 and 2

X - Y = 18
+
X + Y = 86

--------------
2X + 0Y = 104

= 2X = 104

X = 104/2 = 52

put this value in equation 2nd

X + Y = 86

52 + Y = 86

Y = 86 - 52 = 34

hence the number are

52 , 34