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No. 1
2.8 = a.a
16 = a²
a = √16 = 4
No. 2
3.15 = 9.b
45 = 9.b
b = 45/9 = 5
No. 3
4.c = 20.5
4.c = 100
c = 100/4 = 25
No. 4
5.d = 30.6
5.d = 180
d = 180/5 = 36
No. 5
e.3 = 15.1
e.3 = 15
e = 15/3 = 3
dst..
a x a = 2 x 8
= 16
a =
a = 4 atau a = -4
2. =
b x 9 = 3 x 15
b x 9 = 45
b = 45 : 9
b = 5
3. =
c x 4 = 5 x 20
c x 4 = 100
c = 100 : 4
c = 25
4. =
5 x d = 30 x 6
5 x d = 180
d = 180 : 5
d = 36
5. =
e x 3 = 15 x 1
e x 3 = 15
e = 15 : 3
e = 5
6. =
7 x f = 4 x 49
7 x f = 196
f = 196 : 7
f = 28
7. =
9 x g = 27 x 3
9 x g = 81
g = 81 : 9
g = 9
8. =
6 x h = 14 x 3
6 x h = 42
h = 42 : 6
h = 7