Вправа 1052 алгебра Бевз гдз 7 клас

№ 1052
a) $(2 ; 1)$

$$\left\{\begin{array}{l} x+y=3 \\ x-y=1 \end{array}\right.$$

б) $(-3 ; 2)$

$$\left\{\begin{array}{l} x+y=-1 \\ x-y=-5 \end{array}\right.$$

в) $(5 ; 0)$

$$\left\{\begin{array}{l} x+y=5 \\ x-y=5 \end{array}\right.$$

$$\begin{aligned} & \text { г) }(0 ;-4) \\ & \left\{\begin{array}{c} x+y=-4 \\ x-y=4 \end{array}\right. \end{aligned}$$