Question

Por favor pessoal e para amanhã me ajudem
Preciso da conta tbm

Answer 1

A) 4 (x+3) = x
4x+ 12 = x
4x-x= 12
3x=12
x=12
3
x=4

B) 5(2x-1)=2(x+4)
10x-5=2x+8
10x-2x=5+8
8x=13
x=13
8

Answer 2

a) 4(x+3)=20
4x+12=20
4x=20-12
4x=8
x=8/4
x=2

b) 5(2x-1)=2(x+4)
10x-5=2x+8
10x-2x=8+5
8x=13
x=13/8

c) 10-2(x+3)=8+3(2x+5)
10-2x-6=8+6x+15
-2x-6x=8+15-10+6
-8x=19
x=19/-8

d) x-2(x-1)=4-3(x-2)
x-2x+2=4-3x+6
x-2x+3x=4+6-2
2x=8
x=8/2
x=4

e) 2x-3(4-x)=5+4(2x+1)
2x-12+3x=5+8x+4
2x+3x-8x=5+4+12
-3x=21
x=21/-3
x=-7

g) 2x-7=8
2x=8+7
2x=15
x=15/2

h) 5x-7=2x+2
5x-2x=2+7
3x=9
x=9/3
x=3

i) 4y-6=2y
4y-2y=6
2y=6
y=6/2
y=3

j) 6y+30=2y-2
6y-2y=-2-30
4y=-32
y=-32/4
y=-8

k) x+1=7x-2
x-7x=-2-1
-6x=-3
x=-3/-6

l) 7(y-1)=2(5y+1)
7y-7=10y+2
7y-10y=2+7
-3y=9
y=9/-3
y=-3

m) y+4(y-1)=9-2(y+13)
y+4y-4=9-2y-26
y+4y+2y=9-26+4
7y=-13
y=-13/7

n) 4(y-2)+3(2y-1)
4y-8+6y-3
4y+6y=8+3
10y=11
y=11/10

o) x-(x+1)=12-(3x+2)
x-x-1=12-3x-2
x-x+3x=12-2+1
3x=11
x=11/3

ESPERO TER AJUDADO!