Question

4)Resolva as equações do 1 grau abaixo, usando inicialmente a propriedade distributiva :

b) 3 (x -2) = 4 (- x + 3)

c) 2 (x +1 ) - ( x - 1 ) =0

e) 13 + 4 (2 x -1) =5 ( x +2)

g) 2 (x + 5 ) - 3 (5 -x)=10

h)8 ( x - 1 ) =8 - 4 ( 2x -3)

por favor ajudem

Answer 1

b)

$3(x-2)=4(-x+3) (=) 3x-6=-4x+12 (=)3x+4x-6=12 (=) 7x=12+6 (=) x=\frac{18}{7}$

c)

$2 (x+1)-(x-1)=0 (=) 2x-2-x+1=0 (=) 2x-x=2-1 (=) x=1$

e)

$13+4(2x-1)=5(x+2) (=) 13+8x-4=5x+10 (=) 8x-5x=10-13+4 (=) 3x=1 (=) x=\frac{1}{3}$

g)

$2(x+5)-3(5-x)=10 (=) 2x+10 -15 +3x =10 (=) 3x+2x=10-10+15 (=) 5x=15 (=) x=\frac{15}{5} (=) x=3$

h)

$8(x-1)=8-4(2x-3) (=) 8x-8=8-8x+12(=) 8x+8x = 8-8+12 (=) 16x=12 (=) x=\frac{12}{16}$

Espero que tenha ajudado e qualquer dúvida comunique.

Answer 2

a)3x-6= -4x+12
3x-6+4x-12= 0
7x= 18
x= 18/7
b)2x+2-x+1= 0
2x+2x+1= 0
4x= -1
c) 34x-17=5x+10
34x-17x-5x-10= 0
12x= 10
x= 10/12(÷2)
x= 5/6
d)2x+10-15+3x= 10
2x+10-15+3x-10=0
5x-25-10= 0
5x-35= 0
x= 35/5
x= 7
e)8x-8=8x-12
8x-8-8x+12= 0
x= +20

se estiver errado, pode apagar!
mas, espero que seja assim.