how would I solve 5x+7=42

42 then minus 7 this gives you 35.

42-7=35

now you have to work out what goes into 35 five times?

it is 7 therefore the answer is:

5 x 7 + 7= 42

The answer is 9!!

To solve the equation 5x + 7 = 42, you need to isolate the variable x. Here's the step-by-step process to solve it:

Step 1: Begin by subtracting 7 from both sides of the equation to get rid of the constant term on the left side:
5x + 7 - 7 = 42 - 7
5x = 35

Step 2: Next, divide both sides of the equation by the coefficient of x, which is 5, to solve for x:
5x / 5 = 35 / 5
x = 7

So, the solution to the equation 5x + 7 = 42 is x = 7.

Explanation:
In this equation, we have a variable x and constants 5, 7, and 42. The goal is to solve for x.

To isolate x, we start by getting rid of the constant term on the left side of the equation. Since 7 is added to 5x, we subtract 7 from both sides. This cancels out the 7 on the left side, leaving us with 5x alone on the left side, and 42 - 7 = 35 on the right side.

Next, to solve for x, we divide both sides of the equation by the coefficient of x, which is 5. Dividing both sides by 5 isolates x on the left side, giving us x = 7.

By following these steps, we were able to find that x is equal to 7, which is the solution to the equation 5x + 7 = 42.