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Sloane Case
Mathematics
13 July, 23:19
Solve by Substitution
2x + y = 3
4x + 4y = 8
+1
Answers (
1
)
Garfield
13 July, 23:20
0
2x + y = 3 = > y = 3-2x
then
4x+4 (3-2x) = 8
4x+12-8x = 8
-4x = - 4
x=1
y=3-2*1 = 1
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