Question

resolva as equações: a)7×-29=13 b)_5×=_9×+25
c)4×_7×=23_44
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Answer 1

Resposta:

a) 7x - 29 = 13

7x = 13 + 29

7x = 42

x= 42/7

x= 6

b) -5x= -9x + 25

-5x + 9x = 25

4x = 25

x= 25/4

c) 4x - 7x = 23 - 44

-3x = -21 (-1)

3x = 21

x= 21/3

x= 7