1) a = 4.8, b = -7 5/9
a + b = 4.8 + (-7 5/9)a + b = 4.8 - 7 - 5/9a + b = -2.2
2) a = 5 2/7, b = -6.4
a + b = 5 2/7 + (-6.4)a + b = 5 2/7 - 6.4a + b = -1.2
3) a = -1.4, b = 1/5
a + b = -1.4 + 1/5a + b = -1.4 + 0.2a + b = -1.2
1) a = 4.8, b = -7 5/9
a + b = 4.8 + (-7 5/9)
a + b = 4.8 - 7 - 5/9
a + b = -2.2
2) a = 5 2/7, b = -6.4
a + b = 5 2/7 + (-6.4)
a + b = 5 2/7 - 6.4
a + b = -1.2
3) a = -1.4, b = 1/5
a + b = -1.4 + 1/5
a + b = -1.4 + 0.2
a + b = -1.2