Question

a) 2x - 8 = 8 *
b) 3x + 1 = 19 *
c) 7x + 1 - 5x = 9 *
d) y + 9y + 5 = -15 *
e) 15 + 24x = 13x + 37 *
f) 4 ( x - 2 ) = 4 + 2 ( x - 1 ) *
g) 5 ( 3 - x ) - 7x = 3 ( x - 5 ) *
h) 7x - 3 ( x - 2 ) = 3 ( x + 4 ) *
i) 2 ( 1 - t ) + 1 = 3 ( t - 3 ) - 2t *
j) 3 ( 4p - 1 ) + 9 - 4 ( p + 1 ) = 4p

Answer 1

Oieee

Resposta:

a)
2x-8= 8
2x= 8+8
2x= 16
x= 16/2
x= 8

b)
3x+1= 19
3x=19-1
3x=18
x=18/3
x=6

c)
7x+1-5x= 9
7x-5x= 9-1
2x= 8
x=8/2
x= 4

d)
y+9y+5= -15
10y= -15-5
10y= -20
y= -20/10
y= -2

e)
15+24x=13x+37
24x-13x= 37-15
11x= 22
x= 22/11
x= 2

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

g)
5(3-x)-7x=3(x-5)
15-5x-7x= 3x-15
-5x-7x-3x= -15-15
-15x= -30
x= -30/-15
x= 2

h)
7x-3(x-2)= 3(x+4)
7x-3x+6= 3x+12
7x-3x-3x= 12-6
7x-6x= 6
x= 6

i)
2(1-t)+1=3(t-3)-2t
2-2t+1=3t-9-2t
-2t-3t+2t=-9-2-1
-3t=-12
t=-12/-3
t=4

2-2t+1= 3t-9-2t
2-2x4+1= 3x4-9-2x4
2-8+1= 12-9-8
-5= -5

j)

3(4p-1)+9-4(p+1)= 4p
12p-3+9-4p-4= 4p
12p-4p-4p= 3-9+4+4
12p-8p= 3-9+8
4p= 3-1
4p= 2
p= 2/4 (÷2)
p= 1/2

Espero ter ajudado! ^^