Question

A)3(3X-1)=2(3X+2)
B)7(X-2)=5(X+3)
C)3(2X-1)=-2(X+3)
D)5X-3(X+2)=15
E)2X+3X+9=8(6-X)
F)4(X+10)-2(X-5)=0


me ajudemmm!!!!​

Answer 1

Olá!

A) 3(3X - 1) = 2(3X + 2)

9X - 3 = 6X + 4

9X - 6X = 4 + 3

3X = 7

X = 7/3

B) 7(X - 2) = 5(X + 3)

7X - 14 = 5X + 15

7X - 5X = 15 + 14

2x = 29

X = 29/2

C) 3(2X - 1) = - 2(X + 3)

6X - 3 = - 2X - 6

6X + 2X = - 6 + 3

8X = - 3

X = - 3/8

D) 5X - 3(X + 2) = 15

5X - 3X - 6 = 15

2X - 6 = 15

2X = 15 + 6

2X = 21

X = 21/2

E) 2X + 3X + 9 = 8(6 - X)

5X + 9 = 48 - 8X

5X + 8X = 48 - 9

13X = 39

X = 39/13

X = 3

F) 4(X + 10) - 2(X - 5) = 0

4X + 40 - 2X + 10 = 0

2X + 50 = 0

2X = 0 - 50

2X = - 50

X = - 50/2

X = - 25

Espero ter ajudado! :)