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2 years ago

Awnser in one/two step equations

Mathematics

2 answers:

lorasvet [3.4K]2 years ago

8 0

Answer : x=1

-3=-7+x/2
-3=-7+x/2
2(-3)=(-7+x/2)*2
-6 =-7+x
-6+7=x
x=1

More explanation
We multiplied both sides by 2 > is as same as (-7+x)*1/2
When we move -7 to the other side to -6 It changes the positive sign to -7

solniwko [45]2 years ago

5 0

-6=-7+x

Make the variable to the left hand side and change it’s sign.

-6-x=-7

Move the constant to the right hand side and change its sign.

-x=-7+6

Calculate the sum

-x=-1

Change the signs of both sides of the equation .

X=1

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matrenka [14]

Answer:

Correct answer is:

$5y+6r=660\\y=2r+8$

Step-by-step explanation:

Given that Number of bracelets with yellow beads is represented by $y$

Each bracelet with yellow beads is sold for $5.

Total money raised by bracelets with yellow beads = Number of bracelets sold $\times$ Money raised by sale of one such bracelet = $5y$

Also Given that Number of bracelets with Orange beads is represented by $r$

Each bracelet with orange beads is sold for $6.

Total money raised by bracelets with orange beads = Number of bracelets sold $\times$ Money raised by sale of one such bracelet = $6r$

Given that total money raised by sale of both type of bracelets is $660.

so, the first equation becomes:

$5y+6r=660 ....... (1)$

It is also given that "<em>The number of bracelets with yellow beads that Sierra sold is 8 more than twice the number of bracelets with orange beads</em>"

$\Rightarrow r =2r+8 ...... (2)$

So, by equation (1) and (2), the system of equations is:

$5y+6r=660\\y=2r+8$

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