Rozwiąż równania : (( Z OBLICZENIAMI ))
a) 5x+2=8+x
b) 4 ( x-1) = 6+6x
c) 2(x+4)-5(x+3)=2
d) 4x-3=2x+5
e) 3(x-1)=2+8x
f) 3 ( x-4)-2(2x-5)=-4
g) 2x-2=7-x
h) 4(3-x)=2x-12
i) ( x-7)-2(3x+5)=3
j) 6x-7= 1+2x
k ) 5x-17+ 3 ( 3x+1
l ) 4(2x+3)-2(x+3)=-6
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a)5x+2=8+x
5x-x=8-2
4x=6 /:4
x=6/4
x=1 2/4
x=1 1/2
b)4(x-1)=6+6x
4x-4=6+6x
4x-6x=6+4
-2x=10 /:(-2)
x=-5
c)2(x+4)-5(x+3)=2
2x+8-5x-15=2
2x-5x=2+15-8
-3x=9 /:(-3)
x=-3
d)4x-3=2x+5
4x-2x=5+3
2x=8 /:2
x=4
e)3(x-1)=2+8x
3x-3=2+8x
3x-8x=2+3
-5x=5 /:(-5)
x=-1
f)3(x-4)-2(2x-5)=-4
3x-12-4x+10=-4
3x-4x=-4-10+12
-x=-2 /*(-1)
x=2
g)2x-2=7-x
2x+x=7+2
3x=9 /:3
x=3
h)4(3-x)=2x-12
12-4x=2x-12
-4x-2x=-12-12
-6x=-24 /:(-6)
x=4
i)(x-7)-2(3x+5)=3
x-7-6x-10=3
x-6x=3+10+7
-5x=20 /:(-5)
x=-4
j)6x-7=1+2x
6x-2x=1+7
4x=8 /:4
x=2
k)5x-17+3(3x+1 (zgubiłas znak =) napisz to poprawię
l)4(2x+3)-2(x+3)=-6
8x+12-2x-6=-6
8x-2x=-6+6-12
6x=-12 /:6
x=-2
liczę na naj
a)
5x+2=8+x
5x-x=8-2
4x=6 /:4
x= 1,5
b) 4x - 4= 6+ 6x
4x - 6x = 6 + 4
-2x = 10 /:-2
x = -5
c) 2x + 8 -5x - 15= 2
2x - 5x = 2 - 8 + 15
-3x = 9 /:-3
x = -3
d) 4x - 3 = 2x +5
4x - 2x = 5 +3
2x = 8 /:2
x = 4
e) 3x -3 = 2 +8x
3x -8x = 2 + 3
-5x = 5 /: -5
x = -1
f) 3x - 12 -4x + 10 = -4
3x - 4x = -4 +12 - 10
-x = -2 /:-1
x = 2
g) 2x+ x = 7 +2
3x = 9 /:3
x = 3
h) 12 - 4x = 2x - 12
-4x -2x = -12 -12
-6x = -24 /:-6
x = 4
i) ( x-7)-2(3x+5)=3
x - 7 -5x -10 = 3
-4x = 3 +7+10
-4x = 20 /: -4
x = -5
j) 6x - 2x = 1+7
4x = 8 /: 4
x= 2
k)
l) 8x +12 -2x -5 = -6
6x = -6 -12 +5
6x = -13 /: 6
x = - 13/6 = - 2 i 1/6 ta / to kreska ułamkowa