Question

află necunoscutul: (y+5×5)-6×6=40÷2+3, (a+8×2+6×8)-8×9+8×8=6×10+2×4.​

Answer 1

Răspuns:

Explicație pas cu pas:

( y + 5 x 5) - 6 x 6 = 40 : 2 + 3

( y + 25 ) - 36 =20 +3

( y + 25 ) - 36 =23

y+ 25 = 23+36

y + 25 =59

y =59- 25

y=34

( a + 8 x 2 +6 x 8) - 8 x 9+8 x 8=6 x 10 +2 x 4

( a+16 +48) - 8 x 9 + 8 x 8=6 x 10 + 2 x 4

(a + 16+ 48 ) -72 + 64 =60 + 8

( a + 16 + 48 ) - 72 + 64 = 68

( a + 16 + 48) -72=68 - 64

( a + 16 +48 ) - 72=4

( a + 16 + 48 ) =72 + 4

a + 16 +48 =76

a+ 16= 76-48

a+16= 28

a=28-16

a=12

Answer 2

( y + 5 × 5 ) - 6 × 6 = 40 : 2 + 3

( y + 25 ) - 36 = 20 + 3

( y + 25 ) - 36 = 23

y + 25 = 23 + 36

y + 25 = 59

y = 59 - 25

y = 34

Verificare :

( 34 + 5 × 5 ) - 6 × 6 = 40 : 2 + 3

( 34 + 25 ) - 36 = 20 + 3

59 - 36 = 23


( a + 8 × 2 + 6 × 8 ) - 8 × 9 + 8 × 8 = 6 × 10 + 2 × 4

( a + 16 + 48 ) - 72 + 64 = 60 + 8

( a + 16 + 48 ) - 72 + 64 = 68

( a + 16 + 48 ) - 72 = 68 - 64

( a + 16 + 48 ) - 72 = 4

a + 16 + 48 = 4 + 72

a + 16 + 48 = 76

a + 16 = 76 - 48

a + 16 = 28

a = 28 - 16

a = 12

Verificare :

( 12 + 8 × 2 + 6 × 8 ) - 8 × 9 + 8 × 8 = 6 × 10 + 2 × 4

( 12 + 16 + 48 ) - 72 + 64 = 60 + 8

( 28 + 48 ) - 72 + 64 = 68

76 - 72 + 64 = 68

4 + 64 = 68