4 years ago

2(4a-12)+3a=6a How do I solve

Mathematics

1 answer:

UNO [17]4 years ago

6 0

2(4a-12)+3a=6a

Multiply the bracket by 2

(2)(4a)=8a

(2)(-12)=24

8a-24+3a=6a

8a+3a-24=6a ( combine like terms)

11a-24=6a

Move 11a to the other side. Sign changes from +11a to -11a.

11a-11a-24=6a-11a

-24=6a-11a

-24=-5a

Divide both sides by -5

-24/-5=-5a/-5

Answer: a=24/5 or a= 4 4/5 or in decimal x=4.8

You might be interested in

A set of data collected to answer a statistical question has a distribution which can be described by its __________.

Lelechka [254]

All three is correct

3 0

3 years ago

Read 2 more answers

Factor completely, the expression: 2x^3-2x^2-12x

muminat

$2x^3-2x^2-12x=2x(x^2-x-6)=(*)\\\\------------------------------\\x^2-x-6\\\\a=1;\ b=-1;\ c=-6\\\\\Delta=(-1)^2-4\cdot1\cdot(-6)=1+24=25\\\\\sqrt\Delta=\sqrt{25}=5\\\\x_1=\frac{1-5}{2\cdot1}=\frac{-4}{2}=-2;\ x_2=\frac{1+5}{2\cdot1}=\frac{6}{2}=3\\\\x^2-x-6=(x+2)(x-3)\\\\------------------------------\\\\(*)=2x(x+2)(x-3)$

8 0

3 years ago

Did i do this right?

Amanda [17]

Answer:

yes

Step-by-step explanation:

3 0

2 years ago

Samir bought 3 pounds of cement to repair the cracks in his sidewalk.Each crack needs to be filled with 2 ounces of cement. Will

drek231 [11]

Answer: He will divide to convert pounds to ounces.

Step-by-step explanation:

7 0

3 years ago

The difference of the square of a number and 4 is equal to 3 times that number. Find the positive solution.

liberstina [14]

Let the number be 'a':

The difference of the square of a number and 4

a^2 -4

is equal to 3 times that number.

= 3*a

a^2 -4 =3a

a^2 -3a -4=0

(a-4) (a+1)=0

solutions are: 4 and -1

8 0

3 years ago

Read 2 more answers