при каком значении X верна пропорция 1+х1=3+4х/36 2,5+2х/0,5=7,2+2х/0,6?. Created by gulnara29. matematika-ru

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June 2022 1 9 Report

при каком значении X верна пропорция 1+х1=3+4х/36 2,5+2х/0,5=7,2+2х/0,6?

Answers & Comments

tonkksenia 1+x=3+4x/36
1+x=3+x/9
9+9x=27+x
8x=18
4x=9
x=9/4

2.5+2x/0.5=7.2+2x/0.6
2.5+4x=7.2+x/0.3
0.75+1.2x=2.16+x
0.2x=2.16-0.75
0.2x=1.42
20x=142
10x=71
x=7.1

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