Question

4) Resolva as equações e encaixe os valores das incógnitas na cruzadinha:
a) 6x-2x = 28
b) X + 35 = 35
c) 2x + 4 = 32
d) X - 16 = 25
e) 3x + 5 = 81 + x
f) 5x – 20 = 240
g) 4x + 15 = 95
h) 7x - 14 = 5x + 22
i) 4x - 4 = 56
j) 6x - 29 = 43
k) 5x - 2 = 16 + 3x
l) 3x - 6 = 12​

Answer 1

Resposta:

a)  x=7

b)  x= 0

c) x=14

d) x=41

e) x=38

f)  x= 130

g) x= 20

h) x=18

i) x= 15

j)  x=12

k) x=9

l) x=1 9

Explicação passo-a-passo:

a) 6x-2x = 28  -> 4x =28 -> x=7

b) X + 35 = 35  -> x= 35-35 = 0

c) 2x + 4 = 32 -> 2x=28 -> x=28/2=14

d) X - 16 = 25  -> x=25+16 =41

e) 3x + 5 = 81 + x  -> 3x-x = 81 -5 ->2x=76 -> x=76/2=38

f) 5x – 20 = 240  -> 5x= 240+20 -> 5x=260 -> x=260/2 = 130

g) 4x + 15 = 95  -> 4x=95-15 -> 4x=80 -> x= 80/4 =20

h) 7x - 14 = 5x + 22  -> 7x-5x =22+14 ->2x=36 -> x=18

i) 4x - 4 = 56  -> 4x=56+4 -> 4x=60 -> x=60/4= 15

j) 6x - 29 = 43  -> 6x=43+29 -> 6x=72 -> x=72/6 =12

k) 5x - 2 = 16 + 3x  -> 5x-3x=16+2 ->2x=18 ->x=18/2 =9

l) 3x - 6 = 12​ -> 3x=12+6 -> 3x=18 -> x=18/3= 9