9n - 7 = 5n + 5 |add 7 to both sides
9n = 5n + 12 |subtract 5n from both sides
4n = 12 |divide both sides by 4
n = 3
First you distribute the 3
(3x-12) (x+5)=0
then you set each equation equal to zero
3x-12=0 & x+5=0
then you solve for x
x =4, -5
The simplified expression of 8x + 4 - 6y - 3x + y is 5x - 5y + 1
Expression:
An expression is any mathematical statement that consists of numbers, variables and an arithmetic operation between them.
Given,
Here we have the expression 8x + 4 - 6y - 3x + y.
Now, we have to simplify the expression.
To simplify the expression, first we have to write the given expression,
=> 8x + 4 - 6y - 3x + y
Now, we have to combine the like terms, then we get,
=> (8x - 3x) + (-6y + y) + (4 - 3)
Now, we have to perform the appropriate arithmetic operations on it, then we get,
> 5x + (-5y) +1
Therefore, the simplified form of the given expression is 5x - 5y + 1
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For part a, y < x y > -2xPoint B: (3,1) plugin
x=3, y=1
y < x 1 < 3which is true, so point B satisfies the first inequality.
You can graph the inequality y > 2x+5 and see which schools are in the shaded region.
Answer:
x=2
Step-by-step explanation:
x-5=5x-13
5x-x=-5+13
4x=8
x=8/4
x=2