Tenglamalar sistemasi — 7-sinf Algebra test savollari

1.x va y ni toping $\{\begin{array}{c}x+y=6\\ x-y=1\end{array}$

• A)(2; 3)
• B)(2,5; 3,5)
• C)(3,5; 2,5)
• D)(4; 1)

2.Tenglamalr sistemasini yeching: $\{\begin{array}{c}2x+y=7\\ x+y=5\end{array}$

• A)(1; 4)
• B)(2; 3)
• C)(3; 2)
• D)(4; 1)

3.Tenglamalr sistemasini yeching: $\{\begin{array}{c}x-y=2\\ 2x+y=7\end{array}$

• A)(1; -1)
• B)(2; 0)
• C)(3; 1)
• D)(4; 2)

4.Tenglamalr sistemasini yeching: $\{\begin{array}{c}3x+y=10\\ x+y=6\end{array}$

• A)$(2;4)$
• B)$(4:3)$
• C)$(3;2$
• D)$(5;1)$

5.Quyidagi sistemani yeching: $\{\begin{array}{c}2a+3b=13\\ a+b=1\end{array}$

• A)$a=10,b=11$
• B)$a=-10,b=11$
• C)$a=-10,b=-11$
• D)$a=10,b=-11$)

6.Quyidagi sistemani yeching: $\{\begin{array}{c}3u-2v=4\\ 2u+v=11\end{array}$

• A)$u=-\frac{26}{7}:v=-\frac{25}{7}$
• B)$u=\frac{26}{7}:v=-\frac{25}{7}$
• C)$u=\frac{26}{7}:v=\frac{25}{7}$
• D)$u=\frac{26}{8}:v=\frac{25}{8}$

7.Quyidagi tenglamalar sistemasini yeching: $\{\begin{array}{c}4a+b=9\\ 2a-b=3\end{array}$

• A)(2; -1)
• B)(2; 1)
• C)(3; -3)
• D)(1; 5)

8.Quyidagi sistemani yeching: $\{\begin{array}{c}u+2v=8\\ 3u-v=7\end{array}$

• A)$u=-\frac{22}{7}:v=-\frac{17}{7}$
• B)$u=\frac{22}{8}:v=\frac{17}{8}$
• C)$u=\frac{22}{7}:v=\frac{17}{7}$
• D)$u=\frac{22}{9}:v=\frac{17}{9}$

9.Quyidagi tenglamalar sistemasini yeching: $\{\begin{array}{c}2a-3b=-4\\ a+b=5\end{array}$

• A)$a=-\frac{11}{5}:v=\frac{14}{5}$
• B)$a=\frac{11}{5}:v=\frac{14}{5}$
• C)$a=\frac{11}{6}:v=\frac{14}{6}$
• D)$a=-\frac{11}{5}:v=-\frac{14}{5}$

10.Quyidagi tenglamalar sistemasini yeching: $\{\begin{array}{c}\frac{a}{2}+\frac{b}{3}=4\\ \frac{a}{3}-\frac{b}{2}=-1\end{array}$

• A)$a=\frac{60}{16}:b=\frac{66}{13}$
• B)$a=\frac{60}{15}:b=\frac{66}{15}$
• C)$a=\frac{60}{13}:b=\frac{66}{13}$
• D)$a=\frac{60}{14}:b=\frac{66}{14}$