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Allisa [31]
4 years ago
9

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

Mathematics
2 answers:
Fittoniya [83]4 years ago
8 0
Solve simultaneously! use elimination method.

x+y=28
-
x-y=-4
=0x+2y=32
2y/2=32/2
y=16
Mariulka [41]4 years ago
4 0
12+16=28
12-16= -14
Therefore y= 16
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