Question

Find the values of i)x+ y and ii)x-y if 3x+4y = 11 and 4x + 3y - 10​

Answer 1

Answer:

3

1

Step-by-step explanation:

3x+4y=11 &

4x+3y =10

implies 12x+16y=44(by multiply eqn 1st by 4)

12x+9y=30((by multiply eqn 1st by 3)

= 0x +7y =14

y=14/7=2

nowb3x =11-4*2=11-8=3

x=3/3 =1

now x+y = 2+1=3

x-y = 2-1=1