Odpowiedź :
Odpowiedź:
a) 7x = 14 /: 7
x = 2
b) 8x = 24 /: 8
x = 3
c) 1/5x = 3/4 /• 5
x = 15/4 = 3 i 3/4
x = 3 i 3/4
d) -0,3x = 2/5
- 3/10x = 2/5 /• 10/3
x = -2/3 • 2
x = -4/3 = - 1 i 1/3
x = - 1 i 1/3
Pozdrawiam.
a) 7x = 14|: 7
x = 2
b) 8x = 24|: 8
x = 3
c) [tex]\frac{1}{5}[/tex]x = [tex]\frac{3}{4}[/tex]|× 5
x = [tex]\frac{15}{4}[/tex]
x = 3 [tex]\frac{3}{4}[/tex]
d) -0,3x = [tex]\frac{2}{5}[/tex]
-[tex]\frac{3}{10}[/tex]x = [tex]\frac{2}{5}[/tex]|× (-[tex]\frac{10}{3}[/tex])
x = -[tex]\frac{2}{3}[/tex] × 2
x = -[tex]\frac{4}{3}[/tex]
x = -1 [tex]\frac{1}{3}[/tex]