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Jhenny0202
@Jhenny0202
January 2020
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Resolva as igualdades e equaçoes e calcule
a)x+145=100
b)4182÷x=34
c)5·x+65=700
d)7·x-90=491
e)6·x+64=100
f)5·x+12=32
g)8·x-15=25
h)x÷7=34
i)4·x+68=100
j)19·x-645=267
k)400-7·x=274
L)2889÷x=321
m)8x÷23=16
n)45·x=360
o)360÷x=45
p)12·x+56=200
q)75·x-75=1650
obs:o · significa vezes e o x significa que tem que descobrir o numero.
porfavor sem graçinhas eu preciso dessa tarefa pq é atividade avaliativa
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rosanev
A) x + 145 = 100
x = 100 - 145 = -45
b) 4182÷x = 34
4182 = 34x
x = 4182/34
x = 123
c) 5x + 65 = 700
5x = 700 - 65
x = 635/5
x= 127
d) 7x -90 = 491
7x = 491 + 90
7x = 581
x = 581/7
x= 83
e) 6x + 64 = 100
6x = 100 - 64
x = 36/6
x = 6
f) 5x + 12 = 32
5x = 32 -12
5x = 20
x = 20/5
x = 4
g) 8x -15 = 25
8x = 25+15
8x = 40
x = 5
h) x/7 = 34
x = 34.7
x = 148
i) 4x + 68 = 100
4x = 100-68
4x = 32
x = 32/4
x = 8
j) 19x - 645 = 267
19x = 267 + 645
19x = 912
x = 912/12
x = 76
k) 400 - 7x = 274
-7x = 274 - 400
-7x = 126
x = -18
l) 2889/x = 321
2889/321= x
x=9
m) 8x /23 = 16
8x = 16.23
8x = 368
x = 368/8
x = 46
n) 45x = 360
x = 360/45
x = 8
o) 360/x = 45
x = 360/45
x = 8
p) 12x + 56 = 200
12x = 200 - 56
12x = 144
x = 144/12
x = 12
q) 75x -75 = 1650
75x = 1650 + 75
x = 1725/75
x = 23
1 votes
Thanks 1
rosanev
Agora consegui concluir.
jhenny0202
ei obrigado msm
jhenny0202
825÷x=55 rrsponda so mais essa?
rosanev
825/x = 55; x = 825/55; x = 15
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Lista de comentários
x = 100 - 145 = -45
b) 4182÷x = 34
4182 = 34x
x = 4182/34
x = 123
c) 5x + 65 = 700
5x = 700 - 65
x = 635/5
x= 127
d) 7x -90 = 491
7x = 491 + 90
7x = 581
x = 581/7
x= 83
e) 6x + 64 = 100
6x = 100 - 64
x = 36/6
x = 6
f) 5x + 12 = 32
5x = 32 -12
5x = 20
x = 20/5
x = 4
g) 8x -15 = 25
8x = 25+15
8x = 40
x = 5
h) x/7 = 34
x = 34.7
x = 148
i) 4x + 68 = 100
4x = 100-68
4x = 32
x = 32/4
x = 8
j) 19x - 645 = 267
19x = 267 + 645
19x = 912
x = 912/12
x = 76
k) 400 - 7x = 274
-7x = 274 - 400
-7x = 126
x = -18
l) 2889/x = 321
2889/321= x
x=9
m) 8x /23 = 16
8x = 16.23
8x = 368
x = 368/8
x = 46
n) 45x = 360
x = 360/45
x = 8
o) 360/x = 45
x = 360/45
x = 8
p) 12x + 56 = 200
12x = 200 - 56
12x = 144
x = 144/12
x = 12
q) 75x -75 = 1650
75x = 1650 + 75
x = 1725/75
x = 23