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Ex 2 ( a b c ) va rog am o gramada de scris

Ex 2 A B C Va Rog Am O Gramada De Scris class=

Răspuns :

a)...=31.065
b)...4(21+x)=96
84+4x=96
4x=96-84
4x=12
x=3
c)...P(triunghi)=4+0.32+0.05=4.37
(0.12 x 1.25 +1.4 x0.3) x (913,5 : 3 - 6.25: 0.025)=
(1.15+ 0.42) x (304.5 - 250)=
1.57 x 54,5= 85.565