ALJEBRA A3

Ikiwa 4u + 8 = 28; tafuta thamani ya u.

Suluhu

4u + 8 = 28

4u + 8-8 = 28-8   toa 8 kila upande

4u + 0 = 20

4u = 20

4u = 20

4       4

u= 5

Kwa hiyo u = 5