22-10-2016
Mathematics

Answered

6y+5x=8 x3y=-7 use substituion

Verified Answer :

22-10-2016

Substitution:

6y + 5x = 8
x + 3y = -7

x = -3y + 7

6y + 5(-3y + 7) = 8
6y - 15y + 35 = 8
-9y + 35 = 8
-9y = -27
-y = -3
y = 3

x = -7 + 9
x = 2

y = 3
x = 2

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