Question

zad 1

½x+⅓x+7/6
zad2
x+15+½x=2x/2
zad 3 5x-2(15-x)=54
zad4
4(12-x)+5*x=19/4/12
12
zzad5 3x-15=x+15
zad6
2x-4=x+4
zad74(x+2,5)=5x
zad8(x-3)*3
pomocy mam to na jutro

Answer 1

Zad 1
½x+⅓x+7/6 = 5/6 + 7/6 = 12/6 = 2

zad2
x+15+½x=2x/2
1,5x + 15 = x
1,5x -x = -15
x = -15

zad 3
5x-2(15-x)=54
5x - 30 +2x -54 = 0
7x = 84/:7
x = 12

zad4
4(12-x)+5*x=19/4/12
48 - 4x + 5x = 4,75/12
x = 4,75/12 - 48
x = -47 i 7,25/12

zzad5 3x-15=x+15
2x = 30/:2
x = 15

zad6
2x-4=x+4
x = 8

zad7
4(x+2,5)=5x
4x + 10 = 5x
-x = 10/: -1
x = -10

zad8(x-3)*3
3x - 9 = 0
3x = 9
x =3
pomocy mam to na jutro