Question

Rezolvati ecuațiile:
a) 3(4 + 2x) = 42
b) (23-X):6 = 3
c) 5*(3.X-9) = 60
d) (23-5*x):9= 2
e) 24: (5 - x)=6
f )32:(13-5*x) = 4
g) 3*X-15:3=19+3​

Answer 1

Răspuns:

a) 3(4 + 2x) = 42

4+2x=42:3

4+2x=14

2x=14-4

2x=10

x=10:2

x=5

b) (23-X):6 = 3

23-x=6*3

23-x=18

x=23-18

x=5

c) 5*(3.X-9) = 60

3*x-9=60:5

3*x-9=12

3*x=12+9

3*x=21

x=21:3

x=7

d) (23-5*x):9= 2

23-5*x=9*2

23-5*x=18

5*x=23-18

5*x=5

x=5:5

x=1

e) 24: (5 - x)=6

5-x=24:6

5-x=4

x=5-4

x=1

f )32:(13-5*x) = 4

13-5*x=32:4

13-5*x=8

5*x=13-8

5*x=5

x=5:5

x=1

g) 3*X-15:3=19+3​

3*x-5=22

3*x=22+5

3*x=27

x=27:3

x=9

Explicație pas cu pas: