Đề thi HK1 Toán 7 - THCS Song Liễu - Bắc Ninh - Nă...

A $a)\frac{{ - 7}}{{20}}\,\,;\,\,\,b)\,0,55$

B $a)\frac{{ - 7}}{{30}}\,\,;\,\,\,b)\,0,75$

C $a)\frac{{ - 7}}{{20}}\,\,;\,\,\,b)\,0,75$

D $a)\frac{{ - 5}}{{19}}\,\,;\,\,\,b)\,0,75$

A $a)x = 2;\,\,b)\,\left[ \begin{array}{l}x = \frac{5}{4}\\x = \frac{{ - 11}}{4}\end{array} \right.;\,\,\,c)\,x = \frac{{15}}{{42}}\,$

B $a)x = 2;\,\,b)\,\left[ \begin{array}{l}x = \frac{5}{4}\\x = \frac{{ - 11}}{4}\end{array} \right.;\,\,\,c)\,x = \frac{{13}}{{42}}\,$

C $a)x = 3;\,\,b)\,\left[ \begin{array}{l}x = \frac{5}{4}\\x = \frac{{ - 11}}{4}\end{array} \right.;\,\,\,c)\,x = \frac{{13}}{{42}}\,$

D $a)x = 2;\,\,b)\,\left[ \begin{array}{l}x = \frac{7}{4}\\x = \frac{{ - 11}}{4}\end{array} \right.;\,\,\,c)\,x = \frac{{13}}{{42}}\,$