x=2y-7 3x+2y=-5?

-3,2

3(2y - 7) + 2y = - 5
6y - 21 + 2y = - 5
8y = 16
y = 2

x = 4 - 7
x = - 3

x = - 3 , y = 2

Simplify Multiplication on the left side:
+ 6y - 21 + 2y =- 5

Combine like terms on the left side:
+ 8y - 21 =- 5

Subtract - 21 from each side:
+ 8y - 21 =- 5
+ 21 + 21

Divide each side by + 8 .
+ 8y =+ 16
----- -----
+ 8 + 8

+ y =+ 2

x = 2y - 7
3x = 3(2y - 7)

3x + 2y = -5
3(2y - 7) + 2y = -5
6y - 21 + 2y = -5
6y + 2y = -5 + 21
8y = 16
y = 16/8
y = 2

x = 2y - 7
x = 2(2) - 7
x = 4 - 7
x = -3

∴ x = -3 , y = 2

Ok. x=2y-7, right? So substitute 2y-7 where x is in the 2nd problem. 2y-7 is x, so put that in the place of x in the other problem.
3(2y-7)+2y=-5
Use the distributive property for the first part
3*2y is 6y and 3*-7 is -21
So
6y-21+2y=-5
Combine like terms, 6y and 2y is 8y
8y-21=-5
You should now know how to solve that, right?
add 21 on both sides
8y=16
Divide both sides by 8
y=2
Now, you must get what x equals
Substitue 2 for Y in either equation (On a test, substitute y for both to check. it should come out the same in both.)
You could do:
x=(2)(2)-7
2*2 is 4, 4-7 is -3
so x=-3
In the other equation:
3x+(2)(2)=-5
3x+4=-5
Subtract 4 on both sides
3x=-9
Divide both sides by 2
x=-3
So your final answer is:
x= -3, y=2
Which can be written as
-3,2

given x =2y-7
substituting this value of x=2y+7 in the equation 3x+2y=5,we get,
3(2y-7)+2y=-5
6y-21+2y=-5
8y=-5-21
8y=-26
y=-26/8=-13/4put this value in x=2y-7 and u will get the value of x that wld surely be ur answer

let x=2y-7 be equation 1
and 3x+2y=-5 be equation 2

Now substitute equation 1 in that of 2 :
therefore 3x+2y=-5 now becomes
3(2y-7)+2y=-5
6y-21+2y=-5
8y = -5+21
= 16
y= (16/8) = 2
Consequently value of y = 2

Then replace value of y in equation 1:
x= 2(2)-7
= 4-7
= -3

Thus value of x is -3

Required answers of : x = -3
y= 2

Thank you!:)

The first part of the problem: x=2y-7, tells you what x is.

Now set the other part up (3x+2y=-5), only replace the x with (2y-7) as shown above.

Calculate.

this is a very straightforward substitution. just put (2y-7) in place of x in the second equation.

3(2y-7) + 2y = -5
6y - 21 + 2y = -5
8y - 21 = -5
8y = 16
y = 2

x = 2*2 - 7 = -3

solution (-3,2)

check
3*-3 + 2*2 = -5 so it checks

x=2y-7
3x+2y=-5

Sub the value of x from the first equation into the second:
3(2y - 7) + 2y = -5
6y - 21 + 2y = -5
8y - 21 = -5
8y = 16
y = 2

If y = 2, then x = (2y - 7) = (4 - 7) = -3

Your solution is (-3, 2)