What is the solution to this equation? 1. 2x+45-78=4x+6x-0

Expert Answers

An illustration of the letter 'A' in a speech bubbles

2x+45-78=4x+6x-0

For this first one, the first thing you have to do is get the variables on one side and the numbers on the other.  So let's subtract 2x from each side.

45-78 = 4x + 6x - 2x

-33 = 8x

x = -33/8

 

67-77x=0

This one is easier because we don't even have to do any kind of addition or subtraction.  We just subtract 67 from both sides.

-77x = -67

Then divide both sides by -77

x = 67/77

 

87+99-2y+y=56y

 

This one is done just the same as the first one.  Try it yourself.  The answer you should come up with is

y = 186/57

Approved by eNotes Editorial Team

We’ll help your grades soar

Start your 48-hour free trial and unlock all the summaries, Q&A, and analyses you need to get better grades now.

  • 30,000+ book summaries
  • 20% study tools discount
  • Ad-free content
  • PDF downloads
  • 300,000+ answers
  • 5-star customer support
Start your 48-Hour Free Trial