Question

12. Calculați: a) −9+|-4 | + 7 = b) | +7 |-(-3) + | −1 | = c) | −3+2+(-10) = d) -17 +|-3-5+2 | + (-11) =​

Answer 1

a) -9 + | - 4 | + 7 =

= - 9 + 4 + 7

= - 5 + 7

= 2

b) | + 7 | - ( - 3 ) + | - 1 | =

= 7 + 3 + 1

= 10 + 1

= 11

c) | - 3 + 2 + ( - 10 ) | =

= | - 1 + ( - 10 ) |

= | - 11 |

= 11

d) - 17 + | - 3 - 5 + 2 | + ( - 11 ) =

= - 17 + | - 8 + 2 | + ( - 11 )

= - 17 + | - 6 | + ( - 11 )

= - 17 + 6 + ( - 11 )

= - 11 + ( - 11 )

= - 22