2=1/7(-1)+b
Solve for b

b= 15/7

Step-by-step explanation:

multiplying a positive and a negative equals a negative (+)x(-)=(-)

2= - 1/7 x 1 + b

any expression multiplied by 1 stays he same

2= - 1/7 + b

move variable to the left hand side and change the sign

- b +2= - 1/7

move constant to the right hand side and chane the sign

- b= -1/7 -2

calculate the difference

-b = -15/7

chnage the signs on both sides of the equation

b=15/7

Hope this helpsI would really appreciate a brainliest??? <3

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

d no solution

step-by-step explanation: