Solve.
1
3/4
+
7/8
=
2 1/4
3 1/2
2 3/8
2 5/8

2 5/8

Step-by-step explanation:

1 3/4 as a decimal is 1.75 and 7/8 as a decimal is equal to .875 add those together and you get 2.625 which is equal to 2 5/8

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