Question

Simplyfy th following.
a. (-110)+(-91)
b.78-(-42)+(-30)​

Answer 1

Answer:

Step-by-step explanation:

a) ( -110 ) + ( - 30 ) = - 110 - 30 ( ∵ + × - = - )

= - 140 is the answer. ( ∵ - 110 - 30 = - 140 addition )

b) 78 - ( - 42 ) + ( - 30 ) = 78 + 42 - 30 ( ∵ - × - = + and + × - = - )

= 120 - 30 = 90 is the answer.

Answer 2

a. -110+-91= -201

b. first add - 42+-30)=72

now subtract 78 from-72=76

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