Respuesta :

x=18

45(x+7)=2045(+7)=204(x+7)5=204(+7)5=20
Sidharth999
Answer: x = 18

Step-by-Step Explanation:

=> 4/5(x + 7) = 20
4/5 * x + 4/5 * 7 = 20
4x/5 + 28/5 = 20
4x + 28 = 20 * 5
4x + 28 = 100
4x = 100 - 28
4x = 72
=> x = 72/4 = 18

Therefore, x = 18