Question

8. Solve for x and y: x + 2y = 1 and (a - b)x+ (a + b)y = a + b - 2​

Answer 1

Step-by-step explanation:

$(2a - 2b)y +( a + b)y = a - b + a + b - 2 \\ (a - b)y = 2a - 2 \\ y = 2(a - 1) \div a - b \\ x + 2y = 1 \\ x + 4(a - 1) \div a - b = 1 \\ x =( a - b - 4a + 4 ) \div a - b\\ x = ( - 3a - b + 4) \div a - b$