Question

1) resolva as equações, sendo X número racional.

a) x + 4 =10
b) x + 1 = 9
c) x - 2= 8
d) x + 3 = 3
e) x + 101= 300
f) x-279 =237
g) x +7=2
h)x +9= -1
i) x - 8 =10
j) 10 + x= 15
k) 17 + x = 13
l) 128 + x= 900 ​

Answer 1

Resposta:

a)x+4= 10

x= 10-4

x= 6

b) x+1= 9

x= 9-1

x= 8

c) x-2= 8

x=8+2

x= 10

d) x+3=3

x= 3-3

x= 0

e) x+101= 300

x= 300-101

x= 199

f) x-279= 237

x= 237+279

x= 516

g) x+7= 2

x= 2-7

x= -5

h) x+9= -1

x= -1-9

x= -10

i) x-8= 10

x= 10+8

x= 18

j) 10+x= 15

x= 15-10

x= 5

k) 17+x= 13

x= 13-17

x= -4

l) 128+x= 900

x= 900-128

x= 772

espero ter ajudado!!!