PLEASE HELP ! The equation x-7/2=-11 is solved in several steps below. For each step , choose the reason that best justifies it

1. Muliplication Property of Equality

2. Simplifying

3. Addition Property of Equality

4. Simplifying

Step-by-step explanation:

First, get x-7 by itself by multiplying 2 on both sides. Simplify both sides to get x-7=-22. Add 7 to both sides to get x by itself to get x=-15.

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