Question

(0,02у+4 1/2)÷1,3+2,4=8,5

Answer 1

(0,02у+4 1/2)÷1,3+2,4=8,5
(0,02у+4 1/2)÷1,3=8,5-2,4
(0,02у+4 1/2)÷1,3=6,1
0,02у+4 1/2=6,1*1,3
0,02y+4 1/2 = 7,93
0,02y = 7,93 - 4,5
0,02y=3,43
y=3,43:0,02
y=171,5

Answer 2

$(0,02y+ frac{9}{2} )/1,3+2,4=8,5$
$0,01538461y+3,46153846+2,4=8,5$
$0,01538461y+5,86153846=8,5$
$0,01538461y=-5,86153846+8,5$
$0,01538461y=2,63846153$
$frac{0,01538461y}{0,01538461} = frac{2,63846153}{0,01538461}$
$y= frac{2,63846153}{0,01538461}$
$y=171,5$