a: \(=17\left(29+111-29\right)=17\cdot111=1887\)
b: \(=43\left(19-20\right)+40=-43+40=-3\)
c: \(=17\left(-84-16\right)=17\cdot\left(-100\right)=-1700\)
d: \(=15\left(-58+48\right)=-15\cdot10=-150\)
\( 17.[29 - (-111)] + 29.(-17)\)
\(= (-17). (29-29-111)\)
\(=-17.(-111)= 1887\)
\(------------------\)
\(19.43 + (-20).43 - (-40)\)
\(=\)\( 43. [19+(-20)]+40\)
\(= 43. (20 – 19) \)
\(=43.(-1) + 40 \)
\(= - 43 + 40\)
\( - (43 – 40) = - 3\)
\(----------------------\)
\(17.(-84) + 17.(-16)\)
\(=17[-84+(-16)]\)
\(=17.(-100) =-1700\)
\(--------------------\)
\(15.(-58) - 15.(-48)\)
\(=15.\)\([-58-(-48)]\)
\(=15. (-10)=-150\)
a) 17.[29 - (-111)] + 29.(-17)
= 17 . ( 29+111)-29-17
= 17.(19+111-29)
= 17.111 = 1887.
b) 19.43 + (-20).43 - (-40)
= 19.43-20.43+40
=43.(99-20)+40
= -43+40=-3.
c) 17.(-84) + 17.(-16)
17.(-84) + 17.(-16)
=17(-84-16)
=17.(-100)
=-1700.
d) 15.(-58) - 15.(-48)
=15(-58+48)
=-15.10
=-150.
