Odpowiedź:
1. Б)
2. Б)
3. А)
4. Г)
5. [tex]-8x=6,4 | :(-8)\\x=-0,8[/tex]
6. [tex]2,5x+12=2x-13\\0,5x=-25 |*2\\x=50[/tex]
7. [tex]|-9|*|-2|-|-36|:6=9*2-36:6=18-18=0[/tex]
8. [tex]\frac{1}{5} -(-\frac{1}{9})+(-5\frac{1}{3})+\frac{5}{9}-0,2=\frac{9}{45}-(-\frac{5}{45})-\frac{16}{3}+\frac{25}{45}=\frac{14}{45}-\frac{240}{45}+\frac{25}{45}=-\frac{201}{45}=-4\frac{21}{45}=-4\frac{7}{15}[/tex]
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Odpowiedź:
1. Б)
2. Б)
3. А)
4. Г)
5. [tex]-8x=6,4 | :(-8)\\x=-0,8[/tex]
6. [tex]2,5x+12=2x-13\\0,5x=-25 |*2\\x=50[/tex]
7. [tex]|-9|*|-2|-|-36|:6=9*2-36:6=18-18=0[/tex]
8. [tex]\frac{1}{5} -(-\frac{1}{9})+(-5\frac{1}{3})+\frac{5}{9}-0,2=\frac{9}{45}-(-\frac{5}{45})-\frac{16}{3}+\frac{25}{45}=\frac{14}{45}-\frac{240}{45}+\frac{25}{45}=-\frac{201}{45}=-4\frac{21}{45}=-4\frac{7}{15}[/tex]