найдите корни уравнения 1) 2х-5+х+1
2) 3(х-5)=х+3
3) 7(х+6)=4(5х+4)
4)1,5(х+8)=-4х+1
5)1/6(х+9)=-1/3х
6)3/4(х+8)=2х+1
/ дробь
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найдите корни уравнения 1) 2х-5+х+1
2) 3(х-5)=х+3
3) 7(х+6)=4(5х+4)
4)1,5(х+8)=-4х+1
5)1/6(х+9)=-1/3х
6)3/4(х+8)=2х+1
/ дробь
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1) 2х-5=х+12х-х=1+5
х=6
2) 3(х-5)=х+3
3х-15=х+3
3х-х=3+15
2х=18
х=9
3) 7(х+6)=4(5х+4)
7х+42=20х+16
7х-20х=16-42
-13х=-26
13х=26
х=2
4) 1,5(х+8)=-4х+1
1,5х+12=-4х+1
1,5х+4х=1-12
5,5х=-11
х= - 2
5) 1/6(х+9)=-1/3х
1/6x+9/6=-1/3x
1/6x+1/3x=-9/6
1/6x+2/6x=-3/2
3/6x=-3/2
1/3x=-3/2
x=-3/2:1/3=-3*3/2*1=-6/2
x= -3
6) 3/4(х+8)=2х+1
3/4x+3*8/4=2x+1
3/4x-2x=1-6
3/4x-8/4x=-5
-5/4x=-5
5/4x=5
x=5:5/4=5*4/5
х=4