How do you solve 4x + 5+ 25= 90?

1 Answer
May 3, 2017

See the solution process below:

Explanation:

Combine the like terms on the left side of the equation:

4x + 5 + 25 = 90

4x + (5 + 25) = 90

4x + 30 = 90

Next, subtract color(red)(30) from each side of the equation to isolate the x term while keeping the equation balanced:

4x + 30 - color(red)(30) = 90 - color(red)(30)

4x + 0 = 60

4x = 60

Now, divide each side of the equation by color(red)(4) to solve for x while keeping the equation balanced:

(4x)/color(red)(4) = 60/color(red)(4)

(color(red)(cancel(color(black)(4)))x)/cancel(color(red)(4)) = 15

x = 15