Question

a) 3+×=0
b)23×+2=2
$5x - 3x = 30$
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Answer 1

a)

3+x = 0

x = -3

b)

23x + 2 = 2

23x = 2 - 2

x = 0/23

x = 0

c)

5x - 3x = 30

2x = 30

x = 30/2

x = 15