5.
[tex]a=3.5\cdot \:0.2+2020.2^0\\a=0.2\cdot \:3.5+1\\a=0.7+1\\a=1.7\\[/tex]
[tex]b=\frac{41.5}{100}+1.5^2\\b=\frac{41.5}{100}+2.25\\b=0.415+2.25\\b = 2.665[/tex]
Astfel, [tex]a < b[/tex]
6.
[tex]231.18-x=56.354\\231.18-x=56.354-231.18\\-x=-174.826\\x=174.826[/tex]
7.
[tex]54.7+54.7+13.9=123.3\\178-123.3=54.7[/tex]
Raspuns: 54.7 ha de orez
