1)(4-7х):15+(1-х):3=4-(2х+1):5 2)(10-у):6+(3у+8):3=(у+6):2 3)(3х+5):5+(9х-5):4=6+(3х+1):2 4)(5-9х):8-(3+5х):4=(5-3х):2. Created by missmadin4ik. matematika-ru

1)(4-7х):15+(1-х):3=4-(2х+1):5 2)(10-у):6+(3у+8):3=(у+6):2 3)(3х+5):5+(9х-5):4=6...

July 2022 1 2 Report

1)(4-7х):15+(1-х):3=4-(2х+1):5
2)(10-у):6+(3у+8):3=(у+6):2
3)(3х+5):5+(9х-5):4=6+(3х+1):2
4)(5-9х):8-(3+5х):4=(5-3х):2

Answers & Comments

boss0898 1) 4-7х/15+1-х/3=4-2х+1/5
15*4-7х/15+15*1-х/3=15*4-15*2х+1/5
4-7х+5(1-х)=60-3(2х+1)
4-7х+5-5х=60-6х-3
9-12х=57-6х
-12х+6х=57-9
-6х=48
х=-8

2) 10-у/6+3у+8/3=у+6/2
6*10-у/6+6*3у+8/3=6*у+6/2
10-у+2(3у+8)=3(у+6)
10-у+6у+16=3у+18
26+5у=3у+18
5у-3у=18-26
2у=-8
у=-4

3) 3х+5/5+9х-5/4=6+3х+1/2
20*3х+5/5+20*9х-5/4=20*6+20*3х+1/2
4(3х+5)+5(9х-5)=120+10(3х+1)
12х+20+45х-25=120+30х+10
57х-5=130+30х
57х-30х=130+5
27х=135
х=5

37 votes Thanks 75

boss0898 5-9х/8-3+5х/4=5-3х/2

boss0898 8*5-9х/8-8*3+5х/4=8*5-3х/2

boss0898 5-9х-2(3+5х)=4(5-3х)

boss0898 5-9х-6-10х=20-12х

boss0898 -1-19х=20-12х

boss0898 -19х+12х=20+1

boss0898 -7х=21

boss0898 х=-3

Answers & Comments

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