Question

Efectuează :
3×paranteza patrata 90:45+2×(69:23+10)paranteza patrata inchisa+105:3=

Answer 1

3 x [ 90 : 45 + 2 x ( 69 : 23 + 10 ) ] + 105 : 3=119
=3 x [ 2 + 2 x ( 3 + 10 ) ] + 35=
= 3 x ( 2 + 2 x 13 ) + 35 = 
= 3 x ( 2  + 26 ) + 35 = 
= 3 x 28 + 35 = 
=  84 + 35 = 
= 119

Answer 2

3 × [ 90 : 45 + 2 × ( 69 : 23 + 10 ) ] + 105 : 3 = 119
= 3 × [ 2 + 2 × ( 3 + 10 ) ] + 35
= 3 × ( 2 + 2 × 13 ) + 35
= 3 × ( 2 + 26 ) + 35
= 3 × 28 + 35
= 84 + 35
= 119