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When the signs are similar

We will add the number

Bring down the common sign of the number

When the signs are different

We will subtract their absolute value

Bring down the number with greater absolue value

Please don't delete nor copy my answer...

This is based on my mind

From:MariahJoyce

We will add the number

Bring down the common sign of the number

When the signs are different

We will subtract their absolute value

Bring down the number with greater absolue value

Please don't delete nor copy my answer...

This is based on my mind

From:MariahJoyce