Question

Find the difference (10j-7)-(9j-2)

Answer 1

j-5

Explanation:

(10j - 7) -(9j - 2) = x

(10j - 7) = x + (9j - 2)

10j - 7 = x + 9j - 2

10j - 9j -7 + 2 = x

x = ( j - 5)

Answer 2

j-9

Explanation:

combine like factors

subtract nine from both sides, j-7=-2

subtract 2 from both sides, -2-7=-9, j-9