(15+x)×4=88

To solve the equation \( (15 + x) \times 4 = 88 \), you can follow these steps:

1. Divide both sides of the equation by 4:

   \[ 15 + x = \frac{88}{4} \]

   \[ 15 + x = 22 \]

2. Subtract 15 from both sides:

   \[ x = 22 - 15 \]

   \[ x = 7 \]

So, the solution is \( x = 7 \).