Question

a)3(×-1)=5-2×
b)2+2x=6(×-5)
c)5×-2(×-1)=7-4×
d)2(×+1)=3(×+2)
e)3×+2(×+1)=3×-2
f)6×-3(5-2×)=0
g)2(×+3)=5(×-4)
h)4(-2×+5=-5(×+3+1
i)3(4×-7)-(4×-9)=7×-11
j)-2(×-5)-1=3×+7(1-×)
e um trabalho de matematica que eu tenho que fazer pra amanhapfvr me ajudem ​

Answer 1

a)3(x-1) = 5-2x

3x-3 = 5-2x

3x+2x = 5+3

5x = 8

x = 5/8

b)2+2x = 6(x-5)

2+2x = 6x-30

2x-6x = -30-2

-4x = -32

x = 32/4

x = 8

c)5x-2(x-1) = 7-4x

5x-2x+2 = 7-4x

5x-2x+4x = 7-2

7x = 5

x = 5/7

d)2(x+1) = 3(x+2)

2x+2 = 3x+6

2x-3x = 6-2

-x = 4

x = -4

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

3x+2x+2 = 3x-2

3x-2x-3x = -2-2

-2x = -4

x = 4/2

x = 2

f)6x-3(5-2x) = 0

6x-15+6x = 0

12x = 15

x = 15/12

g)2(x+3) = 5(x-4)

2x+6 = 5x-20

2x-5x = -20-6

-3x = -26

x = 26/3

h)4(-2x+5) = -5(x+3)+1

-8x+40 = -5x-15+1

-8x+5x = -15+1-40

-3x = -54

x = 54/3

x = 18

i)3(4x-7)-(4x-9) = 7x-11

12x-21-4x+9 = 7x-11

12x-4x-7x = -11+21-9

x = 1

j)-2(x-5)-1 = 3x+7(1-x)

-2x+10-1 = 3x+7-7x

-2x-3x+7x = -10+1+7

2x = -2

x = -2/2

x = -1

Bom estudo ✨

15/06