please tell the answers. plz I need it right now.
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(I) Z = 4
X + 15 = 9
So x = -6
(II) x/6 = 9/20
x = 2.7
(Iii) 21y + 4 = -4y -8
25y = -12
y = -12/25
X + 15 = 9
So x = -6
(II) x/6 = 9/20
x = 2.7
(Iii) 21y + 4 = -4y -8
25y = -12
y = -12/25
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