Question

7 - -8u = -25 solze for u

Answer 1

Answer: u = -4

Step-by-step explanation:

7 - -8u = -25

-7 -7

8u = -32

__ __

8 8

u = -4

PROOF

7 + 8(-4) = -25 8 * -4 = -32

7 + -32 = -25

-25 = -25

(I did 7 + 8 instead of 7 - -8 because I learned a trick if you see 2 negative signs right next to each other you can just put them together and turn it into a + sign :) Hope this helped!)

Answer 2

u = -4

Explanation:

7 - -8u = -25

Subtracting a negative is like adding a postive

7 +8u = -25

Subtract 7 from each side

7-7 +8u = -25-7

8u = -32

Divide y 8

8u/8 = -32/8

u = -4