решите уравнения:а)0,4х-5(0,2х+1,3)=4хб)24-(6х+12)=7(х-3). Created by lol23568. matematika-ru

решите уравнения:а)0,4х-5(0,2х+1,3)=4хб)24-(6х+12)=7(х-3)...

lol23568 @lol23568

July 2022 1 8 Report

решите уравнения:а)0,4х-5(0,2х+1,3)=4х
б)24-(6х+12)=7(х-3)

Answers & Comments

Lana725875

Verified answer

0,4х-х-6,5=4х
0,4х-х-4х=6,5
-4,6х=6,5
х=-65/46=-1.19/46
--------------------------
24-(6х+12)=7(х-3)
24-6х-12=7х-21
-6х-7х=-21+12-24
-13х=-33
х=33/13
х=2.7/13

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