How do you solve #-21+ 5x = 5x #?

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Answer 1 · 2017-12-19T06:46:07

No solutions

To solve this we must use our algebra knowledge:

#-21 + 5x + 5x #

Subtracting #5x# to both sides:

#-21 = 0 #

But we see this is not true, so hence we can say there are no solutions for #x# that satisfy this equation:

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In terms of lines, we see they never intersect, again no solutions, this is due to both lines being parallel, with the gradient of #5#