4. Rozwiąż równania..... Question from @miny00ngibts

miny00ngibts @miny00ngibts

June 2022 2 10 Report

4. Rozwiąż równania.

berniedu

Odpowiedź:

A) |*4

$5x-3 +12 = 2x\\3x = -9 \\x =3$

B) |*5

$5x-2x-3=15\\3x = 18\\x =6$

C) |*4

$></p><p>D) |*3</p><p><img src=$

E) |*5

$3x-2-10=x\\2x = 12\\x =6$

Szczegółowe wyjaśnienie:

0 votes Thanks 2

Magda

Odpowiedź:

$a)\\\\\frac{5x-3}{4}+3=2x\ \ /\cdot4\\\\5x-3+12=8x\\\\5x+9=8x\\\\5x-8x=-9\\\\-3x=-9\ \ /:(-3)\\\\x=3\\\\\\b)\\\\x-\frac{2x+3}{5}=3\ \ /\cdot5\\\\5x-(2x+3)=15\\\\5x-2x-3=15\\\\3x=15+3\\\\3x=18\ \ /:3\\\\x=6\\\\\\c)\\\\4-\frac{x}{4}=2x-\frac{1}{2}\ \ /\cdot4\\\\16-x=8x-2\\\\-x-8x=-2-16\\\\-9x=-18\ \ /:(-9)\\\\x=2$

$d)\\\\\frac{2x}{3}+4=\frac{x+2}{3}\ \ /\cdot3\\\\2x+12=x+2\\\\2x-x=2-12\\\\x=-10\\\\\\e)\\\\\frac{3x-2}{5}-2=\frac{x}{5}\ \ /\cdot5\\\\3x-2-10=x\\\\3x-12=x\\\\3x-x=12\\\\2x=12\ \ /:2\\\\x=6$

0 votes Thanks 0

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