Odpowiedź:
strona 1
1.
4x + 8 = 2x + 4
4x - 2x = 4 - 8
2x = -4 |:2
x = -2
2.
[tex]\frac{1}{2}x+\frac{1}{2}=\frac{3}{2}x+\frac{3}{2}[/tex] |*2
x+1 = 3x+3
x - 2x = 3-1
-x = 2 |*(-1)
x = -2
3.
[tex]\frac{x+2}{2}=\frac{-x-3}{3}[/tex] |*6
3(x+2) = 2(-x-3)
3x+6 = -2x-6
3x + 2x = -6-6
5x = -12 |:5
x = [tex]-2\frac{2}{5}[/tex]
4.
[tex]2+\frac{x+4}{5} =3[/tex] |*5
10+x + 4 = 15
x = 15-14
x = 1
strona 2
1.
[tex]\frac{1}{2}p^{2}+\frac{1}{4}p+2+2p^{2}+\frac{3}{4}p+8=2\frac{1}{2}p^{2}+p+10[/tex]
2.
(p-2)(3p+4) = 3p²+4p-6p-8 = 3p²-2p - 8
3.
[tex]\frac{25x^{2} +125x+10}{5}=\frac{5(5x^{2} +25x+2)}5 =5x^{2} +25x+2[/tex]
4.
5(2x²-1)-(4x-2) = 10x²-5 -4x + 2 = 10x² -4x - 3
strona 3
[tex]\frac{3}{5}-\frac{x-2}{4}=1[/tex] |*20
12 -5(x-2) = 20
12 - 5x+10 = 20
-5x + 22 = 20 |-22
-5x = -2 |:(-5)
x = [tex]\frac{2}{5}[/tex]
Szczegółowe wyjaśnienie:
