briannagiddens
08.12.2019 •
Mathematics
Solve and show your work for the equation 3(4x – 2) = 9 + 2x + 5
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Ответ:
you can do anyting to an equaiton as long as you do it to both sidess
distributive property
a(b+c)=ab+ac
commutativ property
a+b=b+a
distribute
3(4x-2)=12x-6
12x-6=9+2x+5
add 6 both sides
12x+6-6=9+6+5+2x
12x+0=20+2x
minus 2x
10x=20
divide 10
x=2
Ответ:
y-5=4x+8
+5 +5
y=4x+13
is that what you are talking about?