What do you add to 3 1/7 to make 7

3 and 6/7

Step-by-step explanation:

7 - 22/7

3  6/7

Step-by-step explanation:

3  1/7 + x = 7

(3*7+1)/7 + x = 49/7

22/7 + x = 49/7

x = (49-22)/7

x = 27/7

x = 3  6/7

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

bull

step-by-step explanation: