Rozwiąż równanie :
a) 2x+5=14,8+(x-3)
b) 1/4 x-(4+ 1/2 x) = -2
c) 2(3-x)-4(x-5) = 2x+2
d) 1/3 * (-6x+9) -4 =-5(x+1)
e) 0,2 * (10-5x)=3+2(x-1)
f) 37=(20-4x) *0,5-7x
*=mnożenie
np: 1/2 = ułamek
Proszę o pomoc :)
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a) 2x+5=14,8+x-3
x=11,8-5
x=6,8
b)1/4x - 4 -1/2 x=-2
1/4x - 2/4x =2
-1/4x=2
x=-8
c) 6-2x-4x+20=2x+2
24=8x
x=3
d) -2x+3-4=-5x-5
3x=-4
x=-4/3
x=-1 1/3
e) 2/10*10 - 2/10*5x=3+2x-2
2-1x=1+2x
1=3x
x=1/3
f) 37=10-2x-7x
27=-9x
x=-3
mam nadzieje ze pomoglam :)
a) 2x +5 =14,8 +(x-3)
2x +5 = 14,8 +x -3
2x -x = 14,8 -3 -5
x = 6,8
b) 1/4x -(4+1/2x)= -2
1/4x -4 -1/2x = -2 /*4
x -16 -2x = -8
x - 2x = -8 +16
-x = 8 /*(-1)
x = -8
c) 2(3-x) -4(x-5) = 2x +2
6 - 2x -4x +20 = 2x +2
-2x -4x -2x = 2 -6 -20
-8x = - 24 /:(-8)
x = 3
d) 1/3*( -6x +9) -4 = -5(x+1)
-2x +3 -4 = -5x -5
-2x +5x = -5 -3 +4
3x = -4 /:3
x = -4/3
e) 0,2*(10-5x) = 3+2(x-1)
2 -x = 3+2x -2
-x -2x = 3-2 -2
-3x = -1 /:(-3)
x = 1/3
f) 37 = (20-4x) *0,5 -7x
37 = 10 - 2x -7x
2x + 7x = 10 -37
9x = -27 /:9
x = -3