pls help this .... I'll give 5 tqs

Answers
Answer:
3x+5y=9-----(1)
5x+3y=7-----(2)
multiplying eq(1) by 5 & eq(2) by 3 we get
15x+25y=45
-15x ± 9y= - 21
_____________
16y=24
y=1624=23
[y=23] and x=39−5x23=2−1
Hence[x=21]& [y=23]
so x+y=21+23=2
Answer:
Two equations are given as below:
3x + 5y = 9 …Eq. 1
5x + 3y = 7 …Eq..2
In order to solve, multiplying Eq…1 with 5 and Eq..2 with 3
15x + 25y = 45
15x = 45 - 25y…Eq..3
Now substituting value of 15x from Eq..3 to Eq..4 as following
15x + 9y = 21…Eq…4
45 - 25y + 9y = 21
—16y = 21 - 45
--16y = —24
y = 24/16
y = 3/2
Substituting the value of y in Eq..1
3x + 5 (3/2) = 9
3x + 15/2 = 9
3x = 9 – 15/2
3x = (18 - 15)/2
3x = 3/2
x = 3/2 × 1/3
x =1/2
Now calculating the value of x + y
x + y = 3/2 + 1/2
x + y = 4/2
x + y = 2
Answer the value of x + y is 2
Step-by-step explanation:
3x+5y=9 …(1)
5x+3y=7 …(2)
Let us simplify the equations by eliminating a variable
Make the coefficients of X or Y equal
Multiply equation (1) with 5 and equation (2) with 3
We get 15x+25y=45 and 15x+9y=21
Now subtract the equations, we get
(15x+25y)-(15x+9y)=(45–21)
16y=24, y= 24/16 = 3/2
Substituting the value of y in equation (1) we get
3x+5(3/2)=9
3x+15/2=9
3x=9–15/2
3x=3/2
x =1/2
x+y =3/2+1/2= 2
x+y=2
The other method is simply add equations (1) & (2)
You get
8x+8y=16
x+y=2