Question

what should be subtracted from -5/7 to get -1​

Answer 1

Answer:

-5/7-x=-1 (“Positivize” the unknown -x to simplify the expression of the root x)

-1[(-5/7-x)=-1]

5/7+x=1

5/7–5/7+x=1–5/7

0+x=2/7

x=

2/7

PROOF

If x=2/7, then the inverse of the equation -5/7-x=-1 which gives

-x=-1+5/7

-1[(-2/7)=-1+(5/7)]

2/7=1–(5/7) and

2/7=2/7 establishes the root (zero) of the expression in the premises -5/7-x=-1

Answer 2

Answer:

-1 is the answer

Step-by-step explanation:

-5/7-2/7

→-1

please mark me as brainlist