15.2: Thinking About Solutions n=n

2t+6=2(t+3)

3(n+1)=3n+1

14(20d+4)=5d

5−9+3x=-10+6+3x

12+x=13+x

y⋅-6⋅-3=2⋅y⋅9

v+2=v−2

Combine like terms on the left side.
Combine like terms on the right side
Which equations have the same information on the left side and the right side. Show your work

Step-by-step explanation:

3(n+1) ≠ 3n+1

14(20d+4) ≠ 5d

12+x ≠ 13+x

v+2 ≠ v-2

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

i think it is c hope that