hamdeHamdah hamdeHamdah

18-09-2016
Mathematics

contestada

Sovlving system by substitution
Y=x+5
4x+y=20

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koalatweets koalatweets

18-09-2016

y=x+5

4x+(x+5) = 20

4x +x+5=20

5x+5=20

5x=15

x=3

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