Respuesta :

Answer:

20

Step-by-step explanation:

x + 15 = 30

Subtract 15 from both sides: x = 15

Plug in 15 for 'x' in second equation: 2(15 - 5)

Complete parenthesis: 2(10)

Multiply: 20

Answer:

Answer is 20

Step-by-step explanation:

X+15=30

30-15= 15 so that means 15+15=30

2(x-5) X is 15 so 15-5=10 then multiply by 2.