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3x-2=6
3x=6 /:3
x=2
B)x+2:2*8=x-3
x+2/16=x-3
x+1/8=x-3 /*8
8x+1=8x-24
ox=-25
0=-24
nie ma rozwiązania
C)4(2x-3/4)=53
8x-3=53
8x=56 /:8
x=7
D)2(x+7)=3(2x-5)
2x+14=6x-15
-4x=-29 /:(-4)
x= 7 1/4
E)3(x-5)+7=x+1
3x-15+7=x+1
2x=9 /:2
x= 4 1/2
1/3(3x-2)=2
x-2/3=2
x=2 2/3
b).
x+2:2*8=x-3
x+1×8=x-3
x+8=x-3
2x=(-11) /:2
x=(-5,5)
c).
4(2x-3/4)=53
8x-3=53
8x=56 /:8
x=7
d).
2(x+7)=3(2x-5)
2x+14=6x-15
-4x=(-29) /:(-4)
x=7,25
e).
3(x-5)+7=x+1
3x-15+7=x+1
2x=9 /:2
x=4,5
1/3(3x-2)=2
x-2/3=2
x=2+2/3
x=2,2/3
B)
x+2:2*8=x-3
x+2:16=x-3
x-x=-3-1/8
0=-3,1/8
to jest równanie sprzeczne
C)
4(2x-3/4)=53
8x-3=53
8x=53+3
8x=56/:8
x=7
D)
2(x+7)=3(2x-5)
2x+14=6x-15
2x-6x=-15-14
-4x=-29/:(-4)
x=29/4
x=7,1/4
E)
3(x-5)+7=x+1
3x-15+7=x+1
3x-8=x+1
3x-x=1+8
2x=9/:2
x=9/2
x=4,5