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Bruno Schmitt
Mathematics
5 January, 06:24
Solve:
2y + 5x=30
y = 3x + 4
+1
Answers (
1
)
Lailah
5 January, 06:39
0
Replace the second equation y=3x+4 into the first one:
2 (3x+4) + 5x=30
Now solve for x:
6x+8+5x=30
11x=30-8
11x=22
x=22/11
x=2
Finally, replace x=2 into y=3x+4
y=3*2+4
y=6+4 = 10
So the anwer is x=2, y=10
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