3x + 5y = -1 2x - 5y = 16 Add the two equations: 5x = 15 or x = 3 Substitute for x in the first equation: 3*3 + 5y = -1 15 + 5y = -1 5y = -10 so y = -10/5 = -2 The solution is (x, y) = (3, -2)
2x+4 = -16 2x = -16-4 2x = -20 x = -10
Subtract first from second gives -4x = 16 so x = -4 and y = -7
4x-2y=16 has the solution points (0,-8) and (4, 0) at the coordinate axes, and wherever y= 4(x-4).
2x + 4 = 16 2x = 16 - 4 2x = 12 x = 12/2 x = 6
a = 16
no
15
no 15
9 plus 7 equals 16.
-23+7=-16
-24
No.
71
75 / 15 + 4 + 7 = 16
Fibonacci numbers
8(3) - 16 = 324 - 16 = 38 = 3==========obviously not