Question 194697
y: -0.9y – 1.2 = 2.4 
-0.9y=2.4+1.2
-0.9y=3.6
y=3.6/-0.9
y=-4 ans.
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16+8x=88 
8x=88-16
8x=72
x=72/8
x=9 ans.