~
Объяснение:
а)
{а+в=2. {а=2-в. {а=2-в. {а=2-в
{4а-3в=1. {4(2-в)-3в=1. {8-4в-3в=1. {-7в=1-8=-7
{а=2-1=1
{в=1
б)
{40m+3p=-10. {3p=-10-40m. {3p=-10-40m
{20m-7p=-5. {20m-7(-10-40m)=-5. {20m+70+280m=
{3p=-10-40m. {3p=-10-40m. {3p=-10-40(-0,..
{300m=-5-70=-75. {m=-75/300=-0,25. {m=-0,25
{p=-10-10/3=0
{m=-0,25
~
Объяснение:
а)
{а+в=2. {а=2-в. {а=2-в. {а=2-в
{4а-3в=1. {4(2-в)-3в=1. {8-4в-3в=1. {-7в=1-8=-7
{а=2-1=1
{в=1
б)
{40m+3p=-10. {3p=-10-40m. {3p=-10-40m
{20m-7p=-5. {20m-7(-10-40m)=-5. {20m+70+280m=
{3p=-10-40m. {3p=-10-40m. {3p=-10-40(-0,..
{300m=-5-70=-75. {m=-75/300=-0,25. {m=-0,25
{p=-10-10/3=0
{m=-0,25