Question

[(a+540:6)×7-100]:20=30 Vă rog îmi trebuie urgent​

Answer 1

[ ( a + 540 : 6 ) × 7 - 100 ] : 20 = 30

[ ( a + 90 ) × 7 - 100 ] : 20 = 30

( a + 90 ) × 7 - 100 = 30 × 20

( a + 90 ) × 7 - 100 = 600

( a + 90 ) × 7 = 600 + 100

( a + 90 ) × 7 = 700

a + 90 = 700 : 7

a + 90 = 100

a = 100 - 90

a = 10

Answer 2

Răspuns:

[(a+540:6)x7-10]:20=30

(a+90)x7-100=30x20

(a+90)x7-100=600

(a+90)x7=600+100

(a+90)x7=700

a+90=700:7

a+90=100

a+90=100

a=100-90

a=10

Explicație pas cu pas: