Question

решите уравнения a)4.72-2.5x=2x+2.92; б)5/8y-3/4=2y-2целых2/5

Answer 1

a)
4.72-2.5x=2x+2.92;
2x+2,5x=4,72-2,92
4,5x=1,8
x=1,8:4,5
x=0,4
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б)
5/8y-3/4=2y-2 2/5  /*40
25y-30=80y-96
80y-25y=-30+96
55y=66
y=66:55
y=1,2

Answer 2

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