Question

encontre o valor de x

a) ×+20=60
b) ×+3=80
c) ×-9=20
d) 3×+2=20
e) 4×-1=15
f) 5×-10=30
g) 10×+200=300
h) 9×+20=200
i) 20×1000=1000

me ajudem pfv!​

Answer 1

Resposta:

Explicação passo a passo:

Encontre o valor de x

a) ×+20=60

"x = 60-20"

"x= 40"

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b) ×+3=80

"x = 80-3"

"x=77"

_______________

c) ×-9=20

"x= 20+9"

"x=29"

_____________

d) 3×+2=20

"3x=18"

"x = 18/3"

"x= 6"

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e) 4×-1=15

"4x=16"

"x = 4"

______________

f) 5×-10=30

"5x= 40"

"x =40/5"

"x=8"

___________

g) 10×+200=300

"10x= 100"

"x= 10"

_______________

h) 9x+ 20=200

"9x= 200-20"

"9x=180"

"x= 180/9"

"x= 20"

________________

i) 20×-1000=1000

20x= 1000+1000

"20x= 2000"

"2x= 200"

"x= 200/2"

x= 100"