Calcule o valor do x A )x+5=8 B)x+12=77 C)4+x=9 D)x-19=12 E)x-18=54 F)15.x=60 G)12.x=84 H)x.5=45 I)x.7=28 J)3x-2=16 K)4x+1=33 L)7x-1=41 M)5x-10=80
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B ) X = 77 - 12 > X= 65
C ) X = 9-4 > X = 5
D ) X = 12 + 19 > X = 31
E ) X = 54 + 18 > X = 72
F ) X = 60/15 > X = 4
G ) X = 84/12 > X = 7
H ) X = 45/5 > X = 9
I ) X = 28/7 > X= 4
J ) 3X = 18 > X = 6
K ) 4X = 32 > X = 8
L ) 7X = 42 > X = 6
M ) 5X = 90 > X = 18
X = 3
B) X = 77 - 12
X = 65
C) X = 9 - 4
X = 5
D) X = 12 + 19
X = 31
E) X = 54 + 18
X= 72
F) X = 60/15 (60÷15)
X = 4
G) X = 84/12 (84÷12)
X = 7
H) X = 45/5 (45÷5)
X = 9
I) X = 28/7 (28÷7)
X = 4
J) 3X = 16 + 2
3X = 18
X = 18/3 (14÷3)
X = 6
K) 4X = 33 - 1
4X = 32
X = 32/4 (32÷4)
X = 8
L) 7X = 41 + 1
7X = 42
X = 42/7 (42÷7)
X = 6
M) 5X = 80 + 10
5X = 90
X = 90/5 (90÷5)
X = 18