Question

  a+b = 4 ab=5

a = ?
pls help

Answer 1

1) a + b = 4

Put b = 3

Then, a + 3 = 4

a = 4 - 3

a = 1

Thanks
2) ab = 5

Put b = 5

Then, a × 5 = 5

a = 5 / 5

a = 1

Therefore, a = 1