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22.09.2019 •
Mathematics
What property are you using ? solve for x
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Ответ:
a)![4\left(3x+2\right)-2=12x+6](/tpl/images/0119/4918/d0020.png)
b)![20b-16= 4\left(5b-4\right)](/tpl/images/0119/4918/09d7d.png)
Step-by-step explanation:
a) To simplify the expression you must:
Expand
:
Apply the distributive law:![\:a\left(b+c\right)=ab+ac](/tpl/images/0119/4918/87cfc.png)
Simplify![4\cdot \:3x+4\cdot \:2= 12x+8](/tpl/images/0119/4918/e52c1.png)
Subtract the numbers:![4\left(3x+2\right)-2=12x+6](/tpl/images/0119/4918/d0020.png)
b) To factor the expression
you must:
Rewrite 16 as
and 20 as ![4\cdot 5](/tpl/images/0119/4918/71c7f.png)
Factor out common term 4