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Q: What is x plus 4 equals 9?

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5. Just do 9 minus 4. 5 plus 4 equals 9

5

If: x+(-5) = 4 Then: x = 9

x = 4

-4 (-9 +5 = -4)

x=4

-4

no...why would it.... it equals 2x+9

x + 5 - 2x = 9 -x = 4 x = -4

x=4 y=5 9x+7y=?? Replace: 9(4)+7(5)= 71

5x + 13

9 plus 7 equals 144. Generally, x plus y = x(x+y).

x/(-4) + 9 = 7 Therefore, x/(-4) = -2 Therefore, x = 8

172=x

(-1,-2)

-9-2x+x = -13 -2x+x = -13+9 -x = -4 x = 4

The answer is 144. The compound operator for (a) and (b) in each pair is a * (a+b). For 9 and 7, this is 9 x (9+7) = 9 x 16 = 144.

x equals 19

x=4 y=0

x=4 x=0

x2 + 13x + 36 = 0 so (x+4)(x+9) = 0 so that x = -4 or x = -9

factors are (x + 9)(x - 4) so x = 4 or -9. Does that help?

2 squared plus 2 x 3 = 10, 7 squared plus 7 x 2 = 63, 6 squared plus 6 x 5 = 66,8 squared plus 8 x 4 = 96 so 9 squared plus 9 x 7 = 81 + 63 = 144.

3 x 3 + 4 x 8 = 9 + 32 ...

i assume you mean what does x equal in this case. x = 0 here. x-5+9=4 x+4=4 x=0