Question

2 left-bracket (12 + 2 x) + (15 + 2 x) right-bracket = 74 Help me

Answer 1

Answer:

11.75

Step-by-step explanation:

(12+2 x) + (15+2 x)= 74

12 +2 x + 15 +  2 x= 74

12+15 + 2 x + 2 x= 74

27 + 4 x=74

4 x= 74-27

x= 11.75

Answer 2

Answer: $x=\frac{5}{2}$

Step-by-step explanation:

Do you mean $2[(12+2x)+(15+2x)]=74$? In that case just finish things inside the bracket first then multiply 2 inside.

$2(12+2x+15+2x)=74$

$2(27+4x)=74$

Then multiply 2 inside the bracket.

$54+8x=74$

Move 54 to other side then we get,

$8x=74-54$

$8x=20$

$x=\frac{20}{8}$

$x=\frac{5}{2}$

(Note: If this is not what you mean then please let me know.)