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-2x=4 2y=6
x=-2 y=3
x²+2y
=(-2)²+2.3
=4+6=10 (b)
(15)
a=6
b=2a
=2.6=12
3c=4b
3c=4.12
c=48/3
c=16 (a)
x = 4/-2
x= -2
2y = 6
y = 6/2
y = 3
jadi, x²+2y = -2² + 2x3
= 4 + 6
= 10 (b)
15. b=12
3c=4b
3c = 4 x 12
c = 48/3
c = 16(a)