Question

помогите пожалуйста​

Answer 1

Объяснение:

$left { {{2u-v=1} atop {3u+2v=12}} right. \left { {{4u-2v=2} atop {3u+2v+4u-2v=12+2}} right. \left { {{2u-v=1} atop {7u=14}} right. \\u=14/7=2\v=2*2-1=3$