Question

a) 2.(3-x)=-4.(x+1)
b)3(1/3-x) -(-2x+7)=-3
c) 10+5x=3x+11
d)5x-3=2x+9

me ajudem porfavor :)​

Answer 1

Resposta:

a) 2.(3-x)=-4.(x+1)

6-2x=-4x-4

-2x+4x=-4-6

2x=-10

x=-5

b) 3(1/3-x) -(-2x+7)=-3

3/3 -3x +2x -7= -3

1-x = -3 +7

-x= 4-1

x=-3

c) 10+5x=3x+11

5x -3x=11-10

2x=1

x=1/2

d) 5x-3=2x+9

5x-2x=9+3

3x=12

x=12/3

x=4