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mylen [45]
3 years ago
10

What is the answer to this equation: -18 = 9 + 6(y - 4)

Mathematics
2 answers:
Genrish500 [490]3 years ago
8 0

Answer: -3/6 (reduced is -1/2)

Step-by-step explanation:

distribute the 6

-18 = 9 + 6y - 24

combine like terms on one side

-18 = -15 + 6y

get all like terms on one side

-3 = 6y

divide by 6

-3/6 = y

if you need to simplify or reduce the answer is -1/2.

Advocard [28]3 years ago
8 0

Answer:

\large\boxed{y=-\dfrac{1}{2}=0.5}

Step-by-step explanation:

-18=9+6(y-4)\qquad\text{use the distributive property}\\\\-18=9+6y+(6)(-4)\\\\-18=9+6y-24\qquad\text{combine like terms}\\\\-18=6y+(9-24)\\\\-18=6y-15\qquad\text{add 15 to both sides}\\\\-3=6y\qquad\text{divide both sides by 6}\\\\\dfrac{-3}{6}=\dfrac{6y}{6}\\\\-\dfrac{3:3}{6:3}=y\to y=-\dfrac{1}{2}

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2 years ago
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Step-by-step explanation:

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5 0
3 years ago
9x+18+3x=1
Katen [24]
The error is in the second step they subtracted 3 from both sides but it was a 3x, which you can not do.
Correction.
9x+18+3x=1
12x+18=1
12x=-17
x=-17/12
3 0
3 years ago
Read 2 more answers
How to cross multiply 9/12 =x/100?
Ilia_Sergeevich [38]
The answer is 75. 1. You simplify which is 3/4
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6 0
3 years ago
Karan needs to choose between two gym plans. He can either pay a $150 joining fee and a $10 monthly fee, or he can pay a $50 joi
Ierofanga [76]

Let  x be the month on which the fee for two plans are equal.

Therefore,

150 + 10x = 50 + 30x

10x - 30x = 50 - 150

-20x = -100

x = 5

Cumulative cost = 150 + 10(5)

                           = 150 + 50

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Hence, Karan will pay a cumulative cost of $200 dollars with either plan to go to the gym for 5 months.

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3 years ago
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