Complete the missing value in the solution of the equation. i’m really confused

x=4

Step-by-step explanation:

4x+y = 10

Let y = -6

4x-6 = 10

Add 6 to each side

4x-6+6 =10+6

4x = 16

Divide each side by 4

4x/4 = 16/4

x = 4

answer is 33

step-by-step explanation:

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb