A)14+5x=4x+3x б)3а+5=8а-15, в)3,6+2х=5х+1,2, г)0,7х-1,82=0,8х+3,46 - вопрос №1454335815362512071820832643384 от anitabadurova 17.02.2021 18:12

Question

Математика: A)14+5x=4x+3x б)3а+5=8а-15, в)3,6+2х=5х+1,2, г)0,7х-1,82=0,8х+3,46 , д)2,1/3х+1,1/ 2=1,2/3х+2,1/3, е)1/2-1,3/5у=4,1/2-3у

anitabadurova · Answer

А)5х-4х-3х= -14 -2х= -14х= -14:(-2)х=7б)3а-8а= -15-5-5а= -20а= -20:(-5)а=4в)2х-5х=1,2-3,6-3х= -2,4х= -2,4:(-3)х=0,8г)0,7х-0,8х=3,46+1,82-0,1х= 5,28х=5,28:(-0,1)х= -52,8д)2 1/3х-1 2/3х=2 1/3-1 1/21 3/3х+1/3х -1 2/3х =7/3-3/21 4/3х-1 2/3х=14/6-9/62/3х=5/6х=5/6:2/3х=5/6*3/2х=5/4х=1 1/4е) -1 3/5у+3у=4 1/2-1/22 5/5у-1 3/5у=41 2/5у=47/5у=4у=4:7/5у=4*5/7у=20/7у=2 6/7...