A mineral leaves a gray trail when scraped against an unglazed porcelain plate.
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- By substitution, justify that x = − 6 is a solution to x − 2 = − x − 14.
First, let's substitute the value of x as -6 in the equation.
Now, let's solve it.
Subtract 2 from -6 to get -8.
The opposite of -6 is 6.
Subtract 14 from 6 to get -8.
Compare -8 and -8. We can see that both the LHS & RHS are equal to each other. So, hence we proved that <u>x = − 6 is a solution of x − 2 = − x − 14.</u>