Question

A number increased by 8 is equal to 13 in equation

Answer 1

b) 

Second equation that if number is increased by 8 is equal to 16

Equation :- y+8 =16


I hope this will help you 

Answer 2

Given,

X + 8 = 13

Transposing 8 to RHS

So it's sign turns negative (-)

X = 13-8

There fore...

X = 5

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