Andre111 Andre111

25-09-2017
Mathematics

contestada

If x + y =28 and x - y = -4 , then find the numerical value of y

Respuesta :

25-09-2017

12+16=28
12-16= -14
Therefore y= 16

Answer Link

vinzkumar10owgvm7 vinzkumar10owgvm7

25-09-2017

solve simultaneously! use elimination method.

x+y=28
-
x-y=-4
=0x+2y=32
2y/2=32/2
y=16

Answer Link

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