Question

resolva as equações
a)x+3=5
b)x-7=-2
c)2x3x=-10
d)2x3x70
e)2x+5=25
f)3x-3=24
g)x+12=4

Answer 1

a) x+3= 5
x = 5 -3
x = 2

b) x-7= -2
x= -2+7
x = 5

c) 2x+ 3x= -10
5x = -10
x = -10/5
x = -2

d) 2x+3x = 70
5x = 70
x = 70/5
x = 14

e) 2x+ 5=25
2x = 25 - 5
2x = 20
x = 20/2
x = 10

f )3x - 3 = 24
3x = 24 + 3
3x = 27
x = 27/3
x = 9

g) x + 12 =4
x= 4 - 12
x = - 8


Espero ter ajudado:)

Answer 2

a) x=2; b) x=9; c) ?; d) ?; e) x=10; f) x=9; g) x= - 8