6.
[tex]19 - ( - 20 \div 4) + ( - 3 \times 2)[/tex]
[tex] = 19 - ( - 5) + ( - 6)[/tex]
[tex] = 24 + ( - 6)[/tex]
[tex] = 18[/tex]
______________________________
7.
[tex]( -10 + 3) \times (18 \div (6 - 12))[/tex]
[tex] = ( - 7) \times (18 \div ( - 6))[/tex]
[tex] = ( - 7) \times ( - 3)[/tex]
[tex] = 21[/tex]
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6.
[tex]19 - ( - 20 \div 4) + ( - 3 \times 2)[/tex]
[tex] = 19 - ( - 5) + ( - 6)[/tex]
[tex] = 24 + ( - 6)[/tex]
[tex] = 18[/tex]
______________________________
7.
[tex]( -10 + 3) \times (18 \div (6 - 12))[/tex]
[tex] = ( - 7) \times (18 \div ( - 6))[/tex]
[tex] = ( - 7) \times ( - 3)[/tex]
[tex] = 21[/tex]