Question

a) -(415) + (-210) -367 + 62

b) -69./-45/ -31./45/

c) 3.(-4) +2.(-50)-12

Answer 1

a) \(-415+\left(-210\right)-367+62\)

= \(-625-367+62\)

= \(-992+62\)

= \(-930\)

b) \(-69\left|-45\right|-31\left|45\right|\)

= \(-69.45-31.45\)

= \(45\left(-69-31\right)\)

= \(45.\left(-100\right)\)

= \(-4500\)

c) \(3\left(-4\right)+2\left(-50\right)-12\)

= \(-12+\left(-100\right)-12\)

= \(-112-12\)

= \(-124\).

Answer 2

a)-415+(-210)-367+62

=[-415+(-210)]-(367-62)

=-625-305=-930

b)-69*|-45|-31*|45|

=-69*45-31*45

=(-69-31)*45

=-100*45

=-4500

c)3*(-4)+2*(-50)-12

=-12+100-12

=-24+100

=76