Question

(d) x + y = 10
3x + 5y = 40
Solve Simultaneously​

Answer 1

Answer:

the answer is

$x + y = 10 \\ 3x + 5y = 40 \\ multiple \: the \: eq \: i \: by \: 5 \\ 5x + 5y = 50 \\ 3x + 5y = 40 \\ 2x = 10 \\ x = 5$

Answer 2

Answer:

x= 5

y=5

Step-by-step explanation:

x+y=10

x= 10-y

put the value to the place of in eqns 2

3(10-y)+5y =40

30-3y+5y= 40

2y= 10

y=10/2

=5

then x= 10-y

so x= 10-5= 5

thank you.....