Captcha 87 − = 78

Captcha + 28 = 30

Captcha − 3 = 2

Captcha 21 − = 18

Captcha − 1 = 3

Captcha 89 − = 88

Captcha 35 + = 40

Captcha 22 − = 21

Captcha 38 − 34 =

Captcha 66 + = 75