Evaluate the expression.
1. (18 + 9) + 11
2. 8(-2)(5)
3. 1.2 + 4.7 + 1.5
Simplify the expression.
4. t + 24 + 17
5.-8 + c + (-10)
6.4(6x)
1. 18+9 = 27...+11 = ?
2. 8(-2) = -16...(5) = ?
3. 7.4
4. t + 41
5. c - 18
6. 24x