If a + b + c = -2 and x + y = -9, what is 9x + 4b + 9y + 4c + 4a? I don't understand how to solve this. I need to assign each variable a number that makes the equation true.
+64 Here is one easy answer:
a=0
b=0
c=-2
x=0
y=-9
9(0)+4(0)+9(-9)+4(-2)+4(0)
-81-8
-89
No matter what numbers you assign to each variable, the final result should always=-89
Example:{9 x+4 b+9 y+4 c+4 a, a = 1, b = 2, c = -5, x = -4, y = -5}
4 a+4 b+4 c+9 x+9 y = -89
+129847 If If a + b + c = -2 and x + y = -9, what is 9x + 4b + 9y + 4c + 4a? I don't understand how to solve this. I need to assign each variable a number that makes the equation true.and x + y = -9, what is 9x + 4b + 9y + 4c + 4a?
a + b + c = -2 → 4a + 4b + 4c = -8
x + y = -9 → 9x + 9y = -81
Therefore............
9x + 4b + 9y + 4c + 4a =
[9x + 9y] + [ 4a + 4b + 4c] =
[ -81] + [ -8 ]
-89
