Question

a) 21x – 17 = 109
b) 16x – 32 = 0
c) 1,7 + 2,5x = 4,2
d) 2x + 17,50 = 43,50

Answer 1

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A)

21x - 17 = 109

21x = 109 + 17

21x = 126

x = 6

R) x = 6

_

B)

16x - 32 = 0

16x = 32

x = 32/16

x = 2

R) x = 2

_

C)

1,7 + 2,5x = 4,2

2,5x = 4,2 - 1,7

2,5x = 2,5

x = 1

R) x = 1

_

D)

2x + 17,50 = 43,50

2x = 43,50 - 17,5

2x = 23

x = 23/2

x = 13

R) x = 13

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Att: MarcosPCV