rozwiąż równanie i sprawdź otrzymany wynik
np. 4x + 2 = 8
4x = 6
x=1.5
spr.
L= 4*1.5+2=8
P=8
a) 7x - 13 = 8
b)3x - 4 = 4x
c)3x + 9 = -3x + 9
d) -27x+1 = 2x + 59
e) 45x - 19 = 19x - 45
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a) 7x - 13 = 8
7x= 8 + 13
7x = 21
x= 3
spr:
L = 7*3 - 13 = 8 = P
b) 3x - 4 = 4x
3x - 4x = 4
-x = 4/*(-1)
x = -4
spr:
L = -x = -4 =P
c)3x + 9 = -3x +9
3x + 3x = 9-9
6x = 0/:6
x=0
spr;
L = 6*0 = 0 = P
d) -27x+1 = 2x +59
-29x = 58/:(-29)
x = -29/58
x=-1/2
spr;
L = -29 * (-1/2) = 58 = P
e) 45x - 19 = 19x - 45
45x - 19x = -45 + 19
26x = -26/:26
x=-1
spr;
L= 26*(-1) = 26 =P
a)
7x-13=8
7x = 21
x = 3
spr.
L=7*3 -13 = 21-13 = 8
P=8
b)
3x - 4 = 4x
-x = 4
x = -4
spr.
L= 3*-4 - 4 = -16
P= 4*-4=-16
c)
3x +9 = -3x + 9
6x = 0
x = 0
spr.
L=3*0 +9= 9
p= -3*0 +9 = 9
d)
-27x +1 = 2x + 59
-29x = 58
x = -2
spr.
L=-27*-2 +1 = 55
P= 2*-2 + 59 = 55
e)
45x-19 = 19x - 45
26x = -26
x=-1
spr.
L=45*-1 - 19 = -64
P= 19*-1 - 45 = -64