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1,5x-2/3=2
15/10x=2+2/3
15/10x=6/3+2/3
15/10x=8/3
3/2x=8/3 / :3/2
x=8/3*2/3
x=16/6
x=2 i 4/6
b) 5 (x/5-3)=315
x-3=315
x=-315-3
x=312
c) x+3/2 *8=x-3
x+3 *4=x-3
x+12=x-3
0=(-3)-12
0=(-15)
równanie sprzeczne
d) 4(2x- 3/4)=53
8x-12/4=53
8x-3=53
8x=53+3
8x=56 / :8
x=7
e) 2(x+7)=3(2x-5)
2x+14=6x-15
2x-6x=-15-14
-4x= (-29) / : (-4)
x= 29/4
x=7 i 1/4
f) 3(x-5)+7=x+1
3x-15+7=x+1
2x=1+15-7
2x=9 /:2
x=4,5