Ответ:
x=3
Пошаговое объяснение:
1/6:(1/4х-1/3)-3/8=1/40
1/6:(1/4х-1/3)=1/40+3/8 1/40+3/8=1/40+15/40=16/40=4/10=2/5
1/6:(1/4х-1/3)=2/5
1/4х-1/3=1/6:2/5 1/6:2/5=1/6*5/2=5/12
1/4x-1/3=5/12
1/4x=5/12+1/3 5/12+1/3=5/12+4/12=9/12=3/4
1/4x=3/4
x=3/4:1/4 3/4:1/4=3/4*4/1=3
x=3
проверка 1/6:(1/4*3-1/3)-3/8=1/40
1/6:(3/4-1/3)-3/8=1/40
1/6:(9/12-4/12)-3/8=1/40
1/6:5/12-3/8=1/40
1/6*12/5-3/8=1/40
2/5-3/8=1/40
16/40-15/40=1/40
1/40=1/40
57681+2943=60624
..................
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1. ОДЗ: 4х+3
0 или х-3/4
<span>2. </span><span>390/(4x+3)=26</span>
<span>4x+3=</span><span>390/26</span>
<span><span><span>4x+3=15</span></span></span>
<span>4x=12</span>
<span>х=3</span>
<span>Ответ: х=3</span>
2x-3>3(x-2)
2x-3>3x-6
x<3
4(x-1)>x-13
4x-4>x-13
3x>-9
x>-3
