Question

Aflați pe X :
A) 4(3x+1)-76=12
B) 37-2(x+3)=21
C)[32-(x-3)•5]•3=21
D) 2(3x-7)=94
E)5(x-1)=4
F) [(x-2•3+5]:2=13
G) 2x-3<9
H)3(x-4)≤5
I) 113-x≤110
J) 5X+1≤13
K)2(x-5)≤10
L)4(x+2)≥12
Dau coroniță

Answer 1

A) 4(3x+1)-76=12
12x+4-76=12
12x=12+76-4
12x=84 x=7

B) 37-2(x+3)=21
37-2x-6=21
2x=37-21-6
2x=10 x=5

C)[32-(x-3)•5]•3=21
(32-5x+15)×3=21
32-5x+15=7
5x=32+15-7
5x=40 x=8

D) 2(3x-7)=94
6x-14=94
6x=94+14=108
x=18

E)5(x-1)=4
cred ca e o greseala aici


F) [(x-2)•3+5]:2=13
(3x-6+5)÷2=13
3x-1=26
3x=27 x =9

G) 2x-3<9
2x<12 x<6 x=0,1,2,3,4,5

H)3(x-4)≤5
3x-12≤5
3x≤17
x=4,5


I) 113-x≤110
x≥3 x=3,4,5....

J) 5X+1≤13
5X≤12
x=0,1,2

K)2(x-5)≤10
2x-10≤10
2x≤20
x≤10 x=5,6,7,8,9,10


L)4(x+2)≥12
4x+8≥12
4x≥12-8
4x≥4 deci x≥1 x=1,2,3....