Question

a= 7,9+5,8+(-5,9)+(-2,8)

b=20,03+1,3+20,03-4,3

Answer 1

A= 7,9 + 5,8 + (-5,9) + (-2,8)

A = ( 7,9 -5,9) + (5,8-2,8)

A = 2 + 3

A = 5

B = 20,03 + 1,3 + 20,03 -4,3

B = ( 20,03+20,03) - (4,3 - 1,3)

B = 40,06 - 3

B = 37,06

Answer 2

\(a=7,9+5,8+\left(-5,9\right)+\left(-2,8\right)\)

\(a=7,9+5,8-5,9-2,8\)

\(a=5\)

\(b=20,03+1,3+20,03-4,3\)

\(b=37,06\)