1.

Simplify: (4 - 5) - (13 - 18 + 2).​

Answer»

⠀⠀ıllıllı uoᴉʇnloS ıllıllı

\setlength{\unitlength}{<klux>1</klux>.0 cm}}\begin{picture}(12,<klux>4</klux>)\thicklines\put(1,1){\line(1,0){6.5}}\put(1,1.1){\line(1,0){6.5}}\end{picture}

(4 - 5) - (13 - 18 + 2)

= -1 - (13 + 2 - 18)

= -1 - (15 - 18)

= -1 - (-3)

= -1 + 3

= 2

\setlength{\unitlength}{1.0 cm}}\begin{picture}(12,4)\thicklines\put(1,1){\line(1,0){6.5}}\put(1,1.1){\line(1,0){6.5}}\end{picture}


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