Rozwiąż układy równań.
b) {y=x+3
{2X=y=9
c) {x-4y=15
{y=4x...
ZAD 6/42 ZB. ZADAŃ MATEMATYKA Z PLAUSEM
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Odpowiedzi
a {x=-y {x=-y {x=-y {x=3
{x-y=6 {-y-y=6 {-2y=6/-2 {y=-3
b {y=x+3 {y=x+3 {y=x+3 {y=x+3 {y=3+2 {y=5
{2x+y=9 {2x+x+3=9 {3x+3=9 {3x=6/3 {x=2 {x=2
c{x-4y=15 {x-4*4x=15 {x-16x=15 {-15x=15/-15 {x=-1
{y=4x {y=4x {y=4x {y=4x {y=-4
d{y=-2x-1 {y=-2(y+7)-1 {y=-2y-14-1 {3y=-15/3 {y=-5
{x=y+7 {x=y+7 {x=y+7 {x=-5+7 {x=2
e{-3x=2y {-3x=2(1-x) {-3x=2-2x {-3x+2x=2 {-x=2/-1 {x=-2
{y=1-x {y=1-x {y=1-x {y=1-x {y=1+2 {y=3
f{5x+6y=8 {5(4y-1)+6y=8 {20y-5+6y=8 {26y=13/26 {y=0,5
{x=4y-1 {x=4y-1 {x=4y-1 {x=2-1 {x=1
