Pls helpp 3/4 + 4/5 - 7/10 =?

3/4=0.75

4/5=0.8

7/10=0.7

0.75+0.8=1.55

1.55-0.7=0.85

Step-by-step explanation:

17/20 or 0.85

Step-by-step explanation:

3/4+4/5-7/10=x

convert to have common denominators

15/20+16/20-14/20=x

17/20=x

maybe - definition of supplementary angles. im not sure. sorry

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