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Oliga [24]
3 years ago
5

NEED HELP FAST!

Mathematics
2 answers:
Ahat [919]3 years ago
4 0
2 :
5x+2y=30 subtract 2(x+y=8)
or
-2 :
5x+2y=30 add -2(x+y=8)
sveticcg [70]3 years ago
3 0
5x + 2y = 30
x + y = 8 <==== multiply by -2
--------------
5x + 2y = 30
-2x - 2y = -16 (result of multiplying by -2)
-------------add
3x = 14....u see how multiplying by -2 will eliminate the y's
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