Question

Answer 1

\(a,\dfrac{3}{8}+\dfrac{5}{6}=\dfrac{9+20}{24}=\dfrac{29}{24}\\ b,2,9\cdot\sqrt{100}-13,4=2,9\cdot10-13,4=29-13,4=15,6\)

Answer 2

a,38+56=9+2024=2924b,2,9⋅√100−13,4=2,9⋅10−13,4=29−13,4=15,6

Answer 3

a) \(\dfrac{3}{8}+\dfrac{5}{6}=\dfrac{3.3}{8.3}+\dfrac{5.4}{6.4}=\dfrac{9}{24}+\dfrac{20}{24}=\dfrac{29}{24}\)

b) \(2,9.\sqrt{100}-13,4\)

\(=\left(2,9.10\right)-13,4\) 

\(=29-13,4=15,6\)