Odpowiedź :
a)
[tex]4x+6 = 2x-8\\\\4x-2x = -8-6\\\\2x = -14 \ \ |:2\\\\\boxed{x = -7}[/tex]
b)
[tex]5x-2(x+3) = x-8\\\\5x-2x-6 = x-8\\\\3x-x = -8+6\\\\2x=-2 \ \ |:2\\\\\boxed{x = -1}[/tex]
c)
[tex]\frac{x}{2}+8 = \frac{x}{3} \ \ |\cdot6\\\\3x+48 = 2x\\\\3x-2x = -48\\\\\boxed{x = -48}[/tex]
d)
[tex]2x(x-1) = 2x^{2}+4\\\\2x^{2}-2x= 2x^{2}+4\\\\2x^{2}-2x^{2}-2x=4\\\\-2x = 4 \ \ |:(-2)\\\\\boxed{x = -2}[/tex]
Odpowiedź:
4x +6= 2x-8
4x-2x= -8 -6
2x= - 14 /:2
x= -7
spr... 4*(-7)+6= 2*(-7)-8
-28+6= -14-8
-22 = -22
L=P
*******************************************
5x - 2 ( x+3 )= x-8
5x -2x -6= x-8
5x-2x-x= -8+6
2x= -2 /:2
x= - 1
spr.. 5*(-1) -2*(-1) -6= -1 - 8
-5 +2 -6 = -9
-9= - 9
L=P
*******************************************************
4x+7 = - (x -3) +5
4x +7= -x +3 +5
4x +x= 3+5 -7
5x= 1 /:5
x= 1/5
spr... 4*1/5 +7= -1/5 +3+5
4/5 +7= -1/5 +8
7 i 4/5 = 7 i 4/5
L=P
*******************************************
x/2 +8 = x/3 /*6
3x +48= 2x
3x-2x= - 48
x= - 48
spr... -48/2 +8 = -48/3
-24 +8= - 16
-16= -16
L=P
****************************************
2x ( x-1) = 2x²+4
2x²-2x = 2x²+4
2x²-2x²-2x =4
-2x= 4 /:2
x= - 2
spr... 2*(-2)²-2*(-2) = 2*(-2)² +4
2*4+ 4 = 2*4 +4
8+4= 8+4
12=12
L=P
Szczegółowe wyjaśnienie: