For this case we must solve the following linear equation:
[tex]20-x = 6[/tex]
First step:
We subtract "20" on both sides of the equation:
[tex]20-20-x = 6-20[/tex]
We take into account that different signs are subtracted and the sign of the major is placed:
[tex]-x = -14[/tex]
Second step:
We multiply by "-" on both sides of the equation:
[tex]- (- x) = - (- 14)\\x = 14[/tex]
Answer:
[tex]x = 14[/tex]
