How do you solve #10x-3x=20+1#?

Question

1534 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-03-05T23:11:27

See a solution process below:

First, combine like terms on each side of the equation:

#10x - 3x = 20 + 1#

#(10 - 3)x = 21#

#7x = 21#

Now, divide each side of the equation by #color(red)(7)# to solve for #x# while keeping the equation balanced:

#(7x)/color(red)(7) = 21/color(red)(7)#

#(color(red)(cancel(color(black)(7)))x)/cancel(color(red)(7)) = 3#

#x = 3#