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3x-2=6
3x=8
x=2¼
b) 5(x/5 - 3) = 315
x-15=315
x=330
d) 4(2x - 3/4) = 53
8x-3=53
8x=56
x=7
e) 2(x + 7) = 3(2x - 5)
2x+14=6x-15
-4x=-29
x=7¼
f)3(x - 5) + 7 = x + 1
3x-15+7=x+1
3x-8=x+1
2x=9
x=4½
x-⅔=2
x=2+⅔
x=2⅔
b) 5(x/5 - 3) = 315
x-15=315
x=315+15
x=330
c) x+3/2 *8 = x - 3
x+12=x-3
x-x=-3-12
0=-15 sprzeczność
d) 4(2x - 3/4) = 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=7¼
3(x - 5) + 7 = x + 1
3x-15+7=x+1
3x-x=1+15-7
2x=9/2
x=4,5