You cannot purely solve 3x - y = 13 because there is only one equation for two variables. However, you can specify x or y in terms of the other. For example
3x - y = 13
-y = 13 - 3x
y = -13 + 3x
y = 3x - 13.
3xy - 3xy = 0
13
13-3x = 43 -3x = 43-13 -3x = 30 x = -10
This is the same as: 13-2b = 21 -2b = 21-13 -2b = 8 b = -4
Solved for y: y=(3x-13)/5 Solved for x: x=(5y+13)/3
3xy-4x + 15y-20 Sol: As there are no number are same. So -4x-3xy +15y-20 -------------------- -4x-3xy+15y-20
no
No, it is not.
X +13 equals 22, X equals nine
5
yes 3xy=6
2x^2+3xy-4y2(4)+3(2)(-4)-(4)(-4)8-24+16=0
12 + 5 equals...
3xy - 3xy = 0
5
542 X 13 = 7046
13