Amatilah gambar di bawah. tentukan nilai a,b,c
a = 35
b = 90
c = 29
Penjelasan dengan langkah-langkah:
4a - 20 = 120
4a = 120 + 20
= 140
a = 140/4
= 35
b - 30 = 180 - 120
= 60
b = 60 + 30
= 90
5c - 25 = 120
5c = 120 + 25
= 145
c = 145/5
= 29
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