Question

alguem me ajuda com essas equações?

Answer 1

b) 2x - 1 = x + 5
2x - x = 5 + 1
x = 6

c) 5x/3 = 30
5x = 30 . 3
5x = 90
x = 90/5
x = 18

Answer 2

2x - 1 = x + 5

2x - x = 5 + 1

x = 6

5x             30                  5x                90

-----  =     ----------          -------- =    ----------        5x  = 90      x=  90

3                   1                 3               3                                   ----------    x =  18

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