### Instruction: if a ( a - 4 ) = 21 and b ( b - 4 ) = 21 , where a ≠ b , then a + b = ? Please write a program to solve it.### Response: n0 = 4.0
n1 = 21.0
n2 = 4.0
n3 = 21.0
t0 = n0 + n1
t1 = n0 - n1
t2 = t0 + t1
t3 = t2 - 1.0
t4 = t3 - 1.0
t5 = t4 - 1.0
answer = t5 - 1.0
print(answer)