Two numbers have a difference of 0.85 and a sum of 1 what are the numbers?

let the two numbers be: x & y

x - y = 0.85

x + y = 1

Isolate the x. Subtract y from both sides

x + y (-y) = 1 (-y)

x = 1 - y

Plug in 1 - y for x in the other equation

x - y = 0.85

(1 - y) - y = 0.85

Simplify

1 - 2y = 0.85

Isolate the y. Note the equal sign. What you do to one side, you do to the other. Do the opposite of PEMDAS.

1 (-1) - 2y = 0.85 (-1)

-2y = -0.15

-2y/-2 = -0.15/-2

y = -0.15/-2

y = 0.075

Plug in 0.075 into one of the equations

x = 1 - y

x = 1 - (0.075)

x = 0.925

hope this helps

answer 1 : option "c"

answer 2 : option "d"

answer 3 : option "b"

answer 4 : option "d"

answer 5 : option "b"

answer 6 : option "a"

answer 7 : option "c"

answer 8 : option "d"

answer 9 : option "c"

answer 10 : option "d"

answer 11 : option "c"

answer 12 option "b"

answer 13 option "c"

answer 14 option "c"

answer 15 option "d"

answer 16 option "a"

answer 17 option "b"

answer 18 option "c"

answer 19 option "a"

answer 20 option "a"

answer 21 option "c"

d

step-by-step explanation:

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