How do you solve #19r - 18r - - 7= 6#?

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Answer 1 · 2017-03-30T01:47:12

See the entire solution process below:

First, rewrite the equation remember subtraction of a negative is the same as adding:

#19r - 18r color(red)(+) 7 = 6#

Next, combine like terms on the left side of the equation:

#(19 - 18)r + 7 = 6#

#1r + 7 = 6#

#r + 7 = 6#

Now, subtract #color(red)(7)# from each side of the equation to solve for #r# while keeping the equation balanced:

#r + 7 - color(red)(7) = 6 - color(red)(7)#

#r + 0 = -1#

#r = -1#