Rozwiąż równania i sprawdź:
a)3(x-2)=27
1/5 (5x-1)=4
4(1-3/4x)=34
b)4(5+2x)=6(2x-4)
5(-2x-2/5)+7=25-6x
Wypisać wszystko a nie tylko odpowiedzi. Całe równania napisac prosze.
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3(x-2)=27
3x-6=27
3x=27+6
3x=33/3
x=11
1/5 (5x-1)=4
x-1=4
x=4+1
x=5
4(1-3/4x)=34
4-3x=34
-3x=34-4
-3x=30/3
x=-10
4(5+2x)=6(2x-4)
20+8x=12x-24
8x-12x=-24-20
-4x=-44/4
x=11
5(-2x-2/5)+7=25-6x
-10x-2+7=25-6x
-10x+6x=25+2-7
4x=20/4
x=5
a)3(x-2)=27
3x-6=27
3x=27+6
3x=33
x=11
spr.
L=3(11-2)=3*9=27
P=27
L=P
------------------------------
1/5 (5x-1)=4
x- 1/5=4
x=4+ 1/5
x=20/5 + 1/5
x=21/5=4 1/5= 4,2
spr.
L=1/5 (5*4,2-1)=0,2*(21-1)=0,2*20=4
P=4
L=P
-----------------------------------
4(1-3/4x)=34
4-3x=34
-3x=34-4
-3x=30
x=-30/3
x=--10
spr.
P=4(1-3/4 (-10))=4*(1+30/4)=4*34/4=34
L=34
L=P
b)4(5+2x)=6(2x-4)
20+8x=12x-24
12x-8x=20+24
4x=44
x=11
spr.
L=4(5+2*11)=4(5+22)=4*27=108
P=6(2*11-4)=6*(22-4)=6*18=108
L=P
5(-2x-2/5)+7=25-6x
-10x-2+7=25-6x
-10x+6x=25-5
-4x=20
x=-5
spr.
L=5*(-2*(-5)-2/5)+7=5*(10-2/5)+7=5*48/5 +7=48+7=55
P=25-6(-5)=25+30=55
L=P