5x + 3y = ?
x = 6
y = -5
5 * 6 = 30
3 * -5 = -15
30 + -15 = 15
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That depends on what the value of x is.
No.
Multiply the bottom equation by -1
If 5x plus 3y equals 13, the x equals 2 and y equals 1. This is because 5x2=10 and 3x1=3, and 10+3=13.
The slope is -5/3.