1) |a|+|b| = |-3|+|-7| = 3+7 = 10; |a+b| = |-3-7| = |-10| = 102) |a|+|b| = |-4|+|-10| = 4+10 = 14; |a+b| = |-4-10| = |-14| = 143) |a|+|b| = |7.2|+|2.8| = 7.2+2.8 = 10; |a+b| = |7.2+2.8| = |10| = 10
1) |a|+|b| = |-3|+|-7| = 3+7 = 10; |a+b| = |-3-7| = |-10| = 10
2) |a|+|b| = |-4|+|-10| = 4+10 = 14; |a+b| = |-4-10| = |-14| = 14
3) |a|+|b| = |7.2|+|2.8| = 7.2+2.8 = 10; |a+b| = |7.2+2.8| = |10| = 10