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Alex777 [14]
3 years ago
6

3(b + 5) = 4(2b - 5)

Mathematics
2 answers:
hichkok12 [17]3 years ago
8 0

Answer:

b= 7

Step-by-step explanation:

3b +15 = 8b -20

-8b

-5b = -35

/-5

b= 7

nikklg [1K]3 years ago
6 0

Answer:

b = 7

Step-by-step explanation:

3 ( b + 5 ) = 4 ( 2b - 5 )

The first thing to do is to distribute, using the distributive property.

3 ( b + 5 ) = 4 ( 2b - 5 )

3b + 15 = 8b - 20

whichever side has the highest x value subtract or add the common numeral from.

3b + 15 = 8b - 20

+ 20 + 20

3b + 35 = 8b

then subtract or add the smaller value of x.

3b + 35 = 8b

- 3b - 3b

35 = 5b

Then we divide both sides by the number next to the variable

5b / 5

35 / 5

Now you have the final solution using those numbers

b = 7

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3 years ago
Which value of x satisfies both -9x+4y=8 and -3y-y=4
NNADVOKAT [17]
Here x should be -4/3 to satisfy both equations.
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3 years ago
2(y + 5) <br> use the distributive property to expand expressions.
marta [7]

Answer:

2(y+5)

Step-by-step explanation:

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3 0
3 years ago
Read 2 more answers
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7 0
2 years ago
A number increased by 4 is the same as 19 minus 2 times the number
ElenaW [278]

Hello from MrBillDoesMath!

Answer:

n = 5


Discussion:

Let the original number be "n"  Translating the problem  statement to mathematical symbolism:

n + 4 = 19 - 2n                   =>  add 2n to both sides

n + 2n + 4 = 19 - 2n + 2n  =>  combine like terms

3n + 4 = 19                        => subtract 4 from both sides

3n = 19 -4  = 15                 => divide both sides by 3

n = 15/3 =5


Check: Does 5 +4 = 19 - 2(5)? Does 9 = 9? Yes. so the value for n is confirmed correct.


Thank you,

MrB

6 0
3 years ago
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