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15x 20 6x x 2 x 3
Question
15x-20=6x-(x+2)+(-x+3)
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Answer to a math question 15x-20=6x-(x+2)+(-x+3)
Jayne
4.4
102
Answers
Remove parentheses
$(-a)=-a$
$15x-20=6x-(x+2)-x+3$
Group like terms
$15x-20=6x-x-(x+2)+3$
Add similar elements:
$ 6x-x=5x$
$15x-20=5x-(x+2)+3$
Expand
$5x-(x+2)+3:{\quad}4x+1$
$15x-20=4x+1$
Move
$ 20 $
to the right side
$15x=4x+21$
Move
$ 4x $
to the left side
$11x=21$
Divide both sides by
$11$
$x=\frac{21}{11}$
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