Question

What shoud be subtracted from -3/4 to get 1 ?​

Answer 1

Answer:

Let n = the number that needs to be subtracted from -3/4 to get 1.

"What number should be subtracted from -3/4 to equal 1" can be translated mathematically to the following equation:

-3/4 - n = 1

-3/4 + 3/4 - n = 1 + 3/4

0 - n = 1 + 3/4

0 + (-n) = 1 + 3/4

-n = 4/4 + 3/4

-n = (4 + 3)/4

-n = 7/4

(-1)(-n) = (-1)(7/4)

(-1)(-1)(n) = -7/4

(1)n = -7/4

n = -7/4

CHECK:

-3/4 - n = 1

-3/4 - (-7/4) = 1

-3/4 + [-(-7/4)] = 1

-3/4 + 7/4 = 1

(7 + (-3))/4 = 1

4/4 = 1

1 = 1

Therefore, n = -7/4 is indeed the number that needs to be subtracted from -3/4 to produce 1.