Question

(3xa+6):3+18=50
Află necunoscutul ​

Answer 1

( 3 × a + 6 ) : 3 + 18 = 50

( 3 × a + 6 ) : 3 = 50 - 18

( 3 × a + 6 ) : 3 = 32

3 × a + 6 = 32 × 3

3 × a + 6 = 96

3 × a = 96 - 6

3 × a= 90

a = 90 : 3

a = 30

Answer 2

(3xa+6):3+18=50
(3xa+6):3= 50-18
(3xa+6):3= 32
3xa+6= 32×3
3xa+6= 96
3×a= 96-6
3×a= 90
a= 90÷3
a= 30