Question

g){[(2a+3)•2+3]•2+3}•2+3=85


Vă rog ajutați-mă!

Answer 1

{ [ ( 2 × a + 3 ) × 2 + 3 ] × 2 + 3 } × 2 + 3 = 85

{ [ ( 2 × a + 3 ) × 2 + 3 ] × 2 + 3 } × 2 = 85 - 3

{ [ ( 2 × a + 3 ) × 2 + 3 ] × 2 + 3 } × 2 = 82

{ [ ( 2 × a + 3 ) × 2 + 3 ] × 2 + 3 } = 82 : 2

{ [ ( 2 × a + 3 ) × 2 + 3 ] × 2 + 3 } = 41

[ ( 2 × a + 3 ) × 2 + 3 ] × 2 = 41 - 3

[ ( 2 × a + 3 ) × 2 + 3 ] × 2 = 38

[ ( 2 × a + 3 ) × 2 + 3 ] = 38 : 2

[ ( 2 × a + 3 ) × 2 + 3 ] = 19

( 2 × a + 3 ) × 2 = 19 - 3

( 2 × a + 3 ) × 2 = 16

2 × a + 3 = 16 : 2

2 × a + 3 = 8

2 × a = 8 - 3

2 × a = 5

a = 5 : 2

a = 2, 5