Răspuns:
6)
a) x=6×9:27=54:27=2
b) y= 3×6:2=18:2=9
c) z= 3×6:0,5=18:0,5=36
d) a=10×1,2:3=12:3=4
e) b= 2,1×4:7=8,4:7=1,2
f) u= 1,8×2,52: 1,12=4,536:1,12=4,05
g) x+3=6×5:2=30:2=15 => x=15-3=12
h) 7×x= 42×45:27= 1890:27=70 => x=70:7=10
7) a=300cm× (6:2)=300cm×3=900cm
8) a×b=4×16=64
a³×b³= (a×b)³= 64³= (2⁶)³= 2¹⁸
Sper ca te-am ajutat!
