Question

calcule o valor do X ?
(a) X +5=8
(b) X +6=10
(c) X - 1=7
(D)X - 4=9
(e) 2 . X=14
(F) 8 . X=40
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Answer 1

Resposta:

$a) \: x + 5 = 8 \\ x = 8 - 5 \\ x = 3 \\ b) \: x + 6 = 10 \\ x = 10 - 6 \\ x = 4 \\ c) \: x - 1 = 7 \\ x = 7 + 1 \\ x = 8 \\ d) \: x - 4 = 9 \\ x = 9 + 4 \\ x = 13 \\ e) \: 2x = 14 \\ x = \frac{14}{2} \\ x = 7 \\ f) \: 8x = 40 \\ x = \frac{40}{8} \\ x = 5$

Espero ter ajudado!

Answer 2

Explicação passo-a-passo:

$a)x + 5 = 8 \\ x = 8 - 5 \\ x = 3$

$b)x + 6 = 10 \\ x = 10 - 6 \\ x = 4$

$c)x - 1 = 7 \\ x = 7 + 1 \\ x = 8$

$d)x - 4 = 9 \\ x = 9 + 4 \\ x = 13$

$e)2.x = 14 \\ x = \frac{14}{2}$

$x = 7$

$f)8.x = 40 \\ x = \frac{40}{8}$

$x = 5$