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Wewaii [24]
3 years ago
5

-9=-3(x+2)solve for x show steps

Mathematics
2 answers:
Darya [45]3 years ago
7 0

Note the equal sign. What you do to one side, you do to the other.

Follow PEMDAS.

First, distribute -3 to all terms within the parenthesis.

-9 = -3(x + 2)

-9 = -3x - 6

Next, do the opposite of PEMDAS. Isolate the x. Note the equal sign. What you do to one side, you do the other.

Add 6 to both sides

-9 = -3x - 6

-9 (+6) = -3x - 6 (+6)

-9 + 6 = -3x

-3x = -3

Isolate the x. Divide - 3 from both sides

-3x/-3 = -3/-3

x = -3/-3

x = 1

-------------------------------------------------------------------------------------------------------------------

1 is your answer for x

-------------------------------------------------------------------------------------------------------------------

hope this helps

lianna [129]3 years ago
4 0

SimplifyOkie dokie so first things first, you have to get rid of those parentheses! To do this you use the distributive property. -3(x+2) is the same thing as -3(x)+-3(2). that and you get -9=-3x-6. So you want to get x by itself to be able to find what x is, so you add 6 to both sides of the equation to get rid of the -6. So then you get -3=-3x. Then you must divide both sides by the coefficient of x, which would be -3. When you divide both sides by -3 you get -3/-3=x, which is the same thing as 1=x. Hope this helped!

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5 0
2 years ago
Después de 15 meses de haber prestado un capital al 5% de rédito, tengo que pagar de interés Q468.75. ¿Qué capital se ha prestad
Aleonysh [2.5K]

The capital borrowed, or the principal when the interest was Q468.75 is <u>Q7500</u>.

The principal P, amount borrowed, at a certain rate of interest R%, for  a time of T years, giving an interest of I, can be calculated using the formula:

P = (I * 100)/(R * T).

In the question, we are asked to find the capital borrowed, that is, the principal, when the user pays Q468.75 after 15 months at 5% of income.

Thus, Interest (I) = Q468.75, rate of interest (R) = 5%, and time (T) = 15 months = 15/12 years = 1.25 years.

Thus, the principal P, can be calculated by substituting the values in the formula: P = (I * 100)/(R * T).

P = (468.75*100)/(5*1.25),

or, P = 46875/6.25,

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Thus, the capital borrowed, or the principal when the interest was Q468.75 is <u>Q7500</u>.

The provided question is in Spanish. The question in English is:

"After 15 months of having borrowed capital at 5% of income, I have to pay Q468.75 in interest. What capital has been borrowed?"

Learn more about Interest at

brainly.com/question/25793394

#SPJ1

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