Предмет: Алгебра, автор: toilik112012

№35 Найдите корень уравнения
1) 18-16x=8x-9;
2) 20-3x=2x-45
3) 2.7+1.9x=2x+1.5

Ответы

Автор ответа: xapugin2012

1) -16х-8х= -9-18
-24х= -27
х= -27:(-24)
х=27/24
х=9/8
х=1 1/8

2) -3х-2х= -45-20
-5х= -65
х= -65:(-5)
х=13

3) 1,9х-2х=1,5-2,7
-0,1х= -1,2
х= -1,2:(-0,1)
х=12

Автор ответа: egorkaaa

1) 10-16x=8x-9
-16x-8x=-9-10
-24x=--19
x= $frac{19}{24}$

2) 20-3x=2x-45
-3x-2x=-45-20
-5x=-65
x=13

3) 2.7+1.9x=2x+1.5
1.9x-2x=1.5-2.7
-0.1x=-1.2
x=12

Автор ответа: toilik112012

Спасибо!

Автор ответа: toilik112012

Егор я нечаянно заместо 10 18 написал

Автор ответа: toilik112012

можешь 18 на 10 изменить

Автор ответа: egorkaaa

в первом?

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№35 Найдите корень уравнения1) 18-16x=8x-9; 2) 20-3x=2x-45 3) 2.7+1.9x=2x+1.5

Ответы

№35 Найдите корень уравнения
1) 18-16x=8x-9;
2) 20-3x=2x-45
3) 2.7+1.9x=2x+1.5