Question

Plz tell the steps to solve this ,
100=2u+1/2a(4)
228= 6u+1/2a(36)
Find u and a

Answer 1

multiplying 3 in equation we get

300 = 6u + 1/2a(12)

228 =6u + 1/2a(36)

72 = 1/2a(-24)

72 = -12a

a = -6

putting the value of a in equation 1 we get .

100 = 2u - 12

u = 56 ans.

a = -6 ans.