ALJEBRA A-2

Ikiwa 4a + 20 = 48; tafuta thamani ya a

Suluhu

4a + 20 = 48

4a + 20-20 = 48-20  [toa 20 kila upande]

4a + 0 = 28

4a = 28

4a = 28

4       4

a= 7

Kwa hiyo a = 7