Question

ПОМОГИТЕ РЕШИТЬ
методом СЛОЖЕНИЯ!​

Answer 1

$\displaystyle \tt \left \{ {{3x+2y=8} \atop {4x-y=7}\: \: \: | \cdot 2} \right. \: \to \: \left \{ {{3x+2y=8} \atop {8x-2y=14}} \right. \\\\\displaystyle \tt 3x+8x=8+14\\\displaystyle \tt 11x=22\\\displaystyle \tt x=\frac{22}{11}\\\displaystyle \tt \underline{\bold{x=2}}\\\displaystyle \tt 4\cdot2-y=7\\\displaystyle \tt 8-y=7\\\displaystyle \tt -y=7-8\\\displaystyle \tt -y=-1\\\displaystyle \tt \underline{\bold{y=1}}\\\\\displaystyle \tt \boxed{\bold{(x; \: y)=(2; \: 1)}}$

Ответ: $\displaystyle \tt (2; \: 1)$