Question

Aflati numarul a din egalitatea: 515:5-( 6 x a + 3) =10

Answer 1

515:5-( 6 x a + 3) =10

103-( 6 x a + 3) =10

6 x a + 3 = 103 - 10

6 x a + 3 = 93

6 x a = 93 - 3

6 x a = 90

a = 90 : 6

a = 15

Answer 2

103-(6a+3)=10
-(6a+3)=10-103
-(6a+3)=-93I-1
6a+3=93
6a=93-3
a=90:6
a=15