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3x = 3
x = 1
5=3+7x
7x = 5 - 3
7x = 2
x = 2/7
3x+5=2x
3x - 2x = -5
x = -5
X=2x
a to co to jest?
3x= 9 - 6
3x= 3
x= 3:3
x= 1
spr.
3x + 6 = 9
L = 3x + 6= 3*1 + 6= 3 + 6= 9
P = 9
9=9
L=P
5= 3 + 7x
5 - 3= 7x
2= 7x /:7
2:7 = x
2/7=x
spr.
5 = 3 + 7x
L= 5
P= 3 + 7x= 3 + 7*2/7= 3 + 1 * 2/1 = 3 + 2/1= 3+2= 5
5=5
L=P
3x + 5= 2x
3x - 2x= - 5
x= - 5
spr.
3x + 5= 2x
L= 3x + 5= 3 * (-5) + 5= - 15 + 5= - 10
P = 2x= 2*(-5) = - 10
-10 = - 10
L=P