If 3 - 2x = 13, then x = -5.

Step-by-step explanation:

to prove= Rhs= x=-5

Lhs=3-2x=13

= -2x=13-3

=x=10/-2

x=-5

hence proved

LHS=RHS

hope this helps

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it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: