Question

[12+3×(2×a+1)]=24va rog spuneti-mi cum se rezolva urgent​

Answer 1

[12+3×(2×a+1)]=24

12+3×(2×a+1)=24

3×(2×a+1)=24-12

3×(2×a+1)=12

2×a+1=12:3

2×a+1=4

2×a=4-1

2×a=3

a=3:2

a=1,5

sau

a=3/2

Answer 2

[ 12 + 3 × ( 2 × a + 1 )] = 24

a = [(24 - 12 ÷ 3) - 1 ] ÷ 2

a = (12 ÷ 3 - 1) ÷ 2

a = (4 - 1) ÷ 2

a = 3 ÷ 2

$\boxed{\bold{a = 1, 5}}$