1/x = 7.5/80
Cross multiply
7.5x=80
Divide by 7.5
10.66
Convert to fraction
10 and 2/3
Answer:
x = 14 and x = - 7
Step-by-step explanation:
Not that + (- ) = -
(a)
x + (- 4) = 10, that is
x - 4 = 10 ( add 4 to both sides )
x = 14
(b)
2x - 10 = - 24 ( add 10 to both sides )
2x = - 14 ( divide both sides by 2 )
x = - 7
3. (3,-4)
