Question

POR FAVOR, AJUDA!

(1) .Obtenha a solução de cada equação:
a) 2x= 16
b) y+5= 9
c) 3z-1= 14
d) 7= 19-2x
e) 10-4y= y

(2). Determine e resolva as equações:
a) 4x-3-x+8= 11
b) 6.(x-2)= 12
c) 9+2. (5x-4)= 21
d) 10x+4.(3-2x) - 6= 8
e) 3.(5+3x) + 5.(-x -1)= 22
f) 2.( 9x-4) - 7 +3(6-5x)= 18

Answer 1

a) 2X=16
X=16/2
x=8

b)y+5= 9
y=9-5
y=4

c)3z-1= 14
3z=14+1
3z=15
z=15/3
z=5

d)7=19-2x
19-2x=7
-2x=7-19
-2x=-12 .(-1
2x=12
x=12/2
x=6

e) 10-4y= y
y=10-4y
y+4y=10
y=10/5
y=2

2)
a) 4x-3-x+8= 11
4x-x-3+8=11
3x+5=11
3x=11-5
3x=6
x=6/3
x=2

b) 6.(x-2)= 12
6x-12=12
6x=24
x=24/6
x=4
Multiplica 6 com x e com -2
c) 9+2. (5x-4)= 21
9+10x-8=21
10x-8+9=21
10x=20
x=20/10
x=2

d) 10x+4.(3-2x) - 6= 8
10x+12-8x-6=8
10x-8x+12-6=8
2x+6=8
2x=8-6
x=2/2
x=1

e) 3.(5+3x) + 5.(-x -1)= 22
15+9x-5x-5=22
15+4x-5=22
4x+10=22
x=12/4
x=3

f) 2.( 9x-4) - 7 +3(6-5x)= 18
18x-8-7+18-15x=18
3x+3=18
x=15/3
x=5

Obg de nada