Odpowiedź :
a) 3(4x+ 5)= 29
12x+15=29
12x=29-15
12x=14 |:12
x=14/12
x=1 ⅙
b) 2/3 x + 6= -8+ 1/3 x
⅔x-⅓x=-8-6
⅓x=-14 |*3
x=-42
c) 2(x+3)−9=x−4
2x+6-9=x-4
2x-x=-4+9-6
x=-1
d) 2(x−1)+x=x−3(2−3x)
2x-2+x=x-6+9x
2x-x+x-9x=-6+2
-7x=-4 |:(-7)
x=4/7
a) 3(4x+ 5)= 29
12x+15=29
12x=29-15
12x=14 |:12
x=14/12
x=1 ⅙
b) 2/3 x + 6= -8+ 1/3 x
⅔x-⅓x=-8-6
⅓x=-14 |*3
x=-42
c) 2(x+3)−9=x−4
2x+6-9=x-4
2x-x=-4+9-6
x=-1
d) 2(x−1)+x=x−3(2−3x)
2x-2+x=x-6+9x
2x-x+x-9x=-6+2
-7x=-4 |:(-7)
x=4/7