a)
[tex] \frac{x + x - 10.9}{2} = 16.95 \\ x + x - 10.9 = 16.95 \times 2 \\ 2x - 10.9 = 33.9 \\ 2x = 33.9 + 10.9 \\ 2x = 44.8 \\ x = 44.8 \div 2 \\ x = 22.4[/tex]
primul nr 22.4
al doilea nr 22.4-10.9=11.5
a)Ma=a-b/2=>16,95
a=10,9
(10,9-b):2=16,95
10,9-b=16,95•2=>33,9
b=33,9+10,9
b=44
b)Ma=a•b/2=>16,95
a=2•b
(2b•b):2=>16,95=>33,9
3b=>33,9
b=33,9:3
b=11,3
