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3 years ago

-3(x+5)=3(x-1) How to solve

Mathematics

1 answer:

Luden [163]3 years ago

7 0

Answer:

x = -4

Step-by-step explanation:

-3 (x + 5) = 3 (x - 1) <Start by distributing the -3 and 3 (don't forget to distribute . the negative symbol!

-3x - 15 = 3x - 3

+3x +3x <Add 3x on both sides

-15 = 3x - 3

+3 +3 <Add 3 on both sides

-12 = 3x <Divide by 3 on both sides

-4 = x

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Simplify 4( 3+ 7y) + 6(2 - y) if y =2

UkoKoshka [18]

Answer:

Step-by-step explanation:

The expression is given as:

4( 3+ 7y) + 6(2 - y)

It is known that y is equal to 2. Therefore, substitute 2 in for y.

4(3+7(2))+6(2-2)

Now, solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction

Solve inside of the parentheses first.

4(3+7(2))+6(2-2)

4(3+14)+6(0)

4(17)+6(0)

Multiply

68+0

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3 years ago

If Kaylee was 18 and Lylah was 45 how many years younger would Kaylee be??

SVETLANKA909090 [29]

You are trying to find how much younger Kaylee is than Lylah.

You would subtract her age from Lylah's.

45-18= 27

Kaylee was 27 years younger than Lylah.

I hope this helps!
~kaikers

5 0

3 years ago

Read 2 more answers

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lesantik [10]

Answer:

by 3/4ftmrs torrer is shorter than her husband

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3 years ago

After the outbreak of a mysterious disease, the average wait time at a hospital increased by 70\%70%70, percent. Before the outb

Oksana_A [137]

Answer:

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Step-by-step explanation:

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2 years ago

Read 2 more answers

Kevin runs a farm stand that sells apples and raspberries. Each pound of apples sells for $3.50 and each pound of raspberries se

krek1111 [17]

Kevin sold 10 pounds of apples and 20 pounds of raspberries.

Step-by-step explanation:

Given,

Cost per pound of apples = $3.50

Cost per pound of raspberries = $4

Total amount earned = $115

Let,

x represent the pounds of apples sold

y represent the pounds of raspberries sold

According to given statement;

3.50x+4y=115 Eqn 1

y = 2x Eqn 2

Putting value of y from Eqn 2 in Eqn 1

$3.50x+4(2x)=115\\3.50x+8x=115\\11.50x=115$

Dividing both sides by 11.50

$\frac{11.50x}{11.50}=\frac{115}{11.50}\\x=10$

Putting x=10 in Eqn 2

$y=2(10)\\y=20$

Kevin sold 10 pounds of apples and 20 pounds of raspberries.

Keywords: linear equation, substitution method

Learn more about linear equations at:

#LearnwithBrainly

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2 years ago