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Answer:
(a) x = 1 and y = -1
Step-by-step explanation:
since these two values of x and y satisfies both the equations .......
Answer:
option (A)
Step-by-step explanation:
ax + by = a-b
x = 1 &y=-1
a(1) + b (-1) = a-b
a-b=a-b
bx-ay=a+b
b (1) -a (-1) = a + b
a+b=a + b