Question

[(624+123:3-a):6] ×3 +254=254

Answer 1

[(624+123:3-a):6 x 3=254-254

[(624+123:3-a):6 x 3=0

(624+123:3-a):6=0

624+123:3-a=0

624+123:3=a

624+41=a

a=665