Question

Rezolvați ecuatiile: VA ROOG (URGEEEEENT) FIETI-VA MILA VA ROG FRUMOS DAU COROANA

Answer 1

Răspuns

Explicație pas cu pas:

b)   5 x - 7 = 63 ⇒  5 x = 63 + 7  ⇒   5 x = 70 ⇒   x = 70 : 5  ⇒   x = 14

c)   116 - 5 x = 26

5 x = 116 - 26

5 x = 90

x = 90 : 5

x = 18

________

e)  4 x + 5 = 33

4 x = 33 - 5

4 x = 28

x = 28 : 4

x = 7

____________

f)   13 x - 5 = 60

13 x = 60 + 5

13 x = 65

x = 65 : 13

x = 5

_____________

h)    21 + 5 x = 226

5 x = 226 - 21

5 x = 205

x = 205 : 5

x = 41

____________

i)   3 x + 7 = 40

3 x = 40 - 7

3 x = 33

x = 33 : 3

x = 11

____________

k )    824 - 21 x = 47

21 x = 824 - 47

21 x = 777

x = 777 : 21

x = 37

_____________

l)   34 + 3 x = 427

3 x = 427 - 34

3 x = 393

x = 393 : 3

x = 131

____________

n)   14 x - 5 = 37

14 x = 37 + 5

14 x = 42

x = 42 : 14

x = 3

_________

o)   947 - 13 x = 37

13 x = 947 - 37

13 x = 910

x = 910 : 13

x = 70

___________

r)   29 x + 31 = 930

29 x = 930 - 31

29 x = 899

x = 899 : 29

x = 31

Answer 2

b) 5x-7=63
5x=63+7
5x=70
x=70:5
x=14

c) 116-5x=26
5x=116-26
5x=90
x=90:5
x=18

e) 4x+5=33
4x=33-5
4x=28
x=28:4
x=7

f) 13x-5=60
13x=60+5
13x=65
x=65:13
x=5

h) 21+5x=226
5x=226-21
5x=205
x=205:5
x=41

i) 3x+7=40
3x=40-7
3x=33
x=33:3
x=11

k) 824-21x=47
21x=824-47
21x=777
x=777:21
x=37

l) 34+3x=427
3x=427-34
3x=393
x=393:3
x=131

n) 14x-5=37
14x=37+5
14x=42
x=42:14
x=3

o) 947-13x=37
13x=947-37
13x=910
x=910:13
x=70

r) 29x+31=930
29x=930-31
29x=899
x=899:29
x=31

s) 14x-47=191
14x=191+47
14x=238
x=17