Question

atividade de 25-equação do 1*grau
a)2x+5=7
b)5x-1=19
c)3x-3=5+2x
d)x+8=5
e)x+4=-7
f)3x-1=9= -2x
g)4x=24
h)3x+3-7=-13
i)4x+40-2x+10=0
j)3x+6=4x+4
k)2x+5=12+4x-3
l)3x+20+2x=0
m)t+5=12-4t+37

Answer 1

Explicação passo-a-passo:

a) 2x=7-5

2x= 2

x=2/2

x=1

b) 5x= 19+1

5x= 20

x= 20/5

x=4

c) 3x-2x= 5+3

x= 8

d) x= 5-8

x= -3

e) x= -7-4

x= -11

f) 3x +2x = 9+1

5x= 10

x= 10/5

x=2

g) x=24/4

x= 6

h) 3x=-3-13+7

3x = - 16+7

3x = -9

x= -9/3

x= -3

i) 4x -2x= -10-40

2x = -50

x= -50/2

x= -25

j) 3x -4x= 4-6

-1x = -2

x= -2/-1

x= +2

k) 2x -4x= 12-3-5

-2x = 12 -8

-2x = +4

x= 4/-2

x= -2

l)5x = -20

x= -20/5

x= -4

m) t+4t = 12+37-5

5t = 49 -5

5t = 44

t= 44/5