Rozwiąż układ równań metodą podstawiania:
a){ x+y=3
{x-y=1
b) {x+2y=5
{x-y=2
Z GÓRY DZIĘUJĘ ZA POMOC
a)
x=3-y
x-y=1
3-y-y=1
x=3-y-2y=-3+1x=3-y
-2y=-2 / -2
x=3-yy=1
x=3-1
y=1
x=2
b)
x=5-2y
x-y=2
5-2y-y=2
x=5-2y-3y=-5+2
-3y=-3 /-3
x=5-2
x=3
{ x+y=3{x-y=1
{x=3-y
{3-y-y=1
{-2y=1-3
{-2y=-2/:(-2)
{y=1
{x=3-1
{x=2
{x+2y=5{x-y=2
{x=5-2y
{5-2y-y=2
{-3y=2-5
{-3y=-3/:(-3)
{x=5-2*1
{x=5-2
{x=3
Mam nadzieję, że pomogłam i liczę na naj :)
Pozdrawiam majka2911
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a)
x=3-y
x-y=1
x=3-y
3-y-y=1
x=3-y
-2y=-3+1
x=3-y
-2y=-2 / -2
x=3-y
y=1
x=3-1
y=1
x=2
y=1
b)
x=5-2y
x-y=2
x=5-2y
5-2y-y=2
x=5-2y
-3y=-5+2
x=5-2y
-3y=-3 /-3
x=5-2y
y=1
x=5-2
y=1
x=3
y=1
a)
{ x+y=3
{x-y=1
{x=3-y
{3-y-y=1
{x=3-y
{-2y=1-3
{x=3-y
{-2y=-2/:(-2)
{x=3-y
{y=1
{x=3-1
{y=1
{x=2
{y=1
b)
{x+2y=5
{x-y=2
{x=5-2y
{5-2y-y=2
{x=5-2y
{-3y=2-5
{x=5-2y
{-3y=-3/:(-3)
{x=5-2y
{y=1
{x=5-2*1
{y=1
{x=5-2
{y=1
{x=3
{y=1
Mam nadzieję, że pomogłam i liczę na naj :)
Pozdrawiam majka2911