Rozwiaz nierówności. a.)3x- 5+8x > 26 +13= b.)5(4x+4) - 4(7x+ 9) >4(7x+3) - 5(4x+1)= c.)(12x-8)- (3x-9)>(10x+27)+(4x-1)= DAJE NAJ;)
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a) 3x-5+8x > 26+13
11x>44 |:11
x > 4
b)5(4x+4) > 4(7x+3)-5(4x+1)
20x+20 > 28x+21-20x-5
20x+20x-28x > 21-5-20
12x > -4 |:12
x > -1/3
c)(12x-8)-(3x-9) > (10x+27)+(4x-1)
12x-8-3x+9 > 10x+27+4x-1
12x-3x-10x-4x >27-1+8-9
-1x > 25 |:(-1)
x < -25
Mam nadzieje że pomogłam ^^
Liczę na naj :)
a) 3x-5+8x > 26+13=
11x-5>39
11x>39+5
11x>44 |:11
x=4
b)5(4x+4)-4(7x+9)>4(7x+3)-5(4x+1)=
20x+20-28x-36>28x+12-20x-5
-8x-16>8x+7
-16x-16>7
-16x>23|:-16
x>1.4375
c)(12x-8)-(3x-9)>(10x+27)+(4x-1)=
9x+1>14x+26
9x>14x+25
-5x>25|:-5
x>-5