Question

Помогите решить:
$8 + \frac{ |0.8y - 1.2| }{1.2} = 13$
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Answer 1

$8+\frac{|0.8y-1.2|}{1.2}=13 \:\: |-8\\\\\frac{\left|0.8y-1.2\right|}{1.2}=5 \:\: |\cdot 1,2 \\\\\left|0.8y-1.2\right|=6\\\\0.8y-1.2=-6\quad u \quad \:0.8y-1.2=6\\\\8y-12=-60\quad u \quad \:8y-12=60\\\\8y=-48\quad u \quad \:8y=72\\\\y=-6\quad u \quad \:y=9$

Ответ: y = −6; y = 9.