800-(90×x+17)=423

To find the value of x in the equation 800 - (90×x + 17) = 423, you need to follow the arithmetic operations and isolate the variable x. Here's the step-by-step solution:

First, write down the original equation:

800 - (90×x + 17) = 423

Now, simplify the equation by distributing the subtraction through the parentheses:

800 - 90×x - 17 = 423

Combine like terms by subtracting 800 and 17 on the left side:

783 - 90×x = 423

Next, subtract 783 from both sides to isolate the term with the variable:

783 - 90×x - 783 = 423 - 783

-90×x = -360

Now, to solve for x, you'll need to divide both sides of the equation by -90:

x = -360 / -90

Simplifying this gives you:

x = 4

So the solution to the equation is x = 4.