Question

If 2x+3y=10 and 3x+2y=15,find the value of (x+y)
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Answer 1

Answer:

$2x + 3 = 10 \\ \\ 2x + 3 - 3 = 10 - 3 \\ \\ 2x = 6(divide) \\ 6 \div 2 = 3$

3x +2=15

3x+2-2=15-2

3x = 12 ( divide)

12/3 =4

So, the value of x&y is 3&4

Answer 2

Answer:

5

Step-by-step explanation:

2x + 3y = 10

2x = 10 - 3y

x = $\frac{10 - 3y}{2}$

3x + 2y = 15

3( $\frac{10 - 3y}{2}$) + 2y = 15

$\frac{30-9y}{2}$  + 2y = 15

$\frac{30 - 9y + 4y}{2}$ = 15

30 - 5y = 30\

y = 0

x = 5

So, x + y = 0 + 5 = 5

Ans:- 5

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