Question

1;) resolva as seguintes equações, sendo U=Q
A;) 4 x - 1 = 3 (x -1)
B;) 3(2 x -1)= -2 (x + 3)
C;) 7 ( x - 2)= 5 (x + 3)
D;) 4 (x + 10) -2 (x -5)=0
E;) 2 x + 3x + 9 = 8 (6 - x)

Answer 1

Explicação passo-a-passo:

A)4x-1=3(x-1)

4x-1=3x-3

4x-3x=-3+1

x=-2

B)3(2x-1)=-2(x+3)

6x-3=-2x+6

3x+2x=6+3

5x=9

x= 9

5

x=1,8

C)7(x-2)=5(x+3)

7x-14=5x+15

7x-5x=15-14

2x=1

x= 1

2

x=0,5

D)4(x+10)-2(x-5)=0

4x+40-2x-10=0

4x-2x=0+10-40

2x=-30

x= -30

2

x=-15

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

2x+3x+9=48-8x

2x+3x+8x=49-9

13x=40

x= 40

13

x=3,07...