3(5+2x)+4 x=1455

To solve the equation 3(5+2x) + 4 x = 1455, you will need to follow these steps:

Step 1: Distribute the 3 to the terms inside the parentheses: 3(5) + 3(2x) + 4x = 1455 15 + 6x + 4x = 1455

Step 2: Combine like terms: 10x + 15 = 1455

Step 3: Move the constant term to the other side of the equation by subtracting 15 from both sides: 10x = 1455 - 15 10x = 1440

Step 4: Divide both sides of the equation by 10 to solve for x: x = 1440 / 10 x = 144

So, the solution to the equation 3(5+2x) + 4 x = 1455 is x = 144.