Question

(7+3 1/4-3/5)+(0,4-5)-(4 1/4-1)

Answer 1

(7 + 3 1/4 - 3/5) + (0,4 - 5) - (4 1/4 - 1)

(7 + 13/4 - 3/5) + (2/5 - 5) - (17/4 - 1)

= 7 + 13/4 - 3/5 + 2/5 - 5 - 17/4 + 1

= (7 - 5 + 1) + (13/4 - 17/4) + (-3/5 + 2/5)

= 3 - 1 - 1/5

= 2 - 1/5

= 9/5

Answer 2

(7 + 3\(\dfrac{1}{4}\) - \(\dfrac{3}{5}\)) + (0,4 - 5) - ( 4\(\dfrac{1}{4}\) - 1)

= 7 + 3 + \(\dfrac{1}{4}\) - 0,6 - 4,6 - 4 - \(\dfrac{1}{4}\) + 1

= ( 7 + 3 - 4 + 1) + (\(\dfrac{1}{4}\) - \(\dfrac{1}{4}\)) - ( 0,6 + 4,6) 

=   7 - 5,2

= 1,8