Question

[(y+540:6)×7-100]:4:5=30
Află pe y
Dau coroană

Answer 1

[ ( y + 540 : 6 ) × 7 - 100 ] : 4 : 5 = 30

[ ( y + 90 ) × 7 - 100 ] : 4 : 5 = 30

[ ( y + 90 ) × 7 - 100 ] : 4 = 30 × 5

[ ( y + 90 ) × 7 - 100 ] : 4 = 150

[ ( y + 90 ) × 7 - 100 ] = 150 × 4

[ ( y + 90 ) × 7 - 100 ] = 600

[ ( y + 90 ) × 7 ] = 600 + 100

[ ( y + 90 ) × 7 ] = 700

y + 90 = 700 : 7

y + 90 = 100

y = 100 - 90

y = 10

Answer 2

Răspuns

[(y+90)*7-100]:4=30*5

[(y+90)*7-100]:4=150

(y+90)*7-100=150*4

(y+90)*7-100=600

(y+90)*7=600+100

(y+90)*7=700

y+90*7=700

y+90=700:7

y+90=100

y=100-90

y=10