Question

gente me ajuda pfvr

a) 2×+5=13

b) 5×-5= 30

c) 3×= 2× + 10

d) 5× -3= 3×+2

com cálculo pfvrr

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Answer 1

a)

$2x + 5 = 13 \\ 2x = 13 - 5 \\ 2x = 8 \\ x = \frac{8}{2} \\ x = 4$

b)

$5x - 5 = 30 \\ 5x = 30 - 5 \\ 5x = 25 \\ x = \frac{25}{5} \\ x = 5$

c)

$3x = 2x + 10 \\ 3x - 2x = 10 \\ x = 10$

d)

$5x - 3 = 3x + 2 \\ 5x - 3x = 2 +3 \\ 2x = 5 \\ x = \frac{5}{2} \\ x = 2.5$