Question

7. a - [6 – c + a – {b - (c - a - a - b)}]

Answer 1

Step-by-step explanation:

Consider the equation 3x+y=2

Multiply the quation by 3 so that we can eliminate y

3(3x+y=2)=3×2

9x+3y=6

Adding it with 5x−3y=8

9x+3y+5x−3y=6+8

14x=14

x=1

Putting the value of x in equation 3x+y=2

3×1+y=2

3+y=2

y=2−3

y=−1

So, we have x=1andy=−1