Please help me with these math problems..

42(7)

-28(-17)

15(-34)

(-3 1/4)(2 1/2)

(-2 2/3)(-1 1/6)

(1 1/4)(-1 1/5)

(1.5)(8.8)

(6.8)(-1.3)

(-0.2)(2.8)

(-3.6)(-0.55)

6.3(-1.3)

(-(0.2)(2.8)

(-3.6)(-0.55)

6.3(-0.7)

2/3 (-4)(9)

This is the simple application of BEDMAS (Brackets, Exponents, Division, Multiplication, Addition, Subtraction) which is the order of calculations from left to right. And a number next to a bracket means that one should multiple the contents of the bracket by that number, same thing for a bracket next to a bracket. So...

42(7) = 42 x 7 = 294

-28(-17) = -28 x -17 = 476

15(-34) 15 x -34 = -510

(-3 1/4)(2 1/2) = -3.25 x 2.5 = -8.125

(-2 2/3)(-1 1/6) = -2.67 x -1.17 = 3.1239

(1 1/4)(-1 1/5) = 1.25 x -1.2 = -1.5

(1.5)(8.8) = 1.5 x 8.8 = 13.2

(6.8)(-1.3) = 6.8 x -1.3 = -8.84

(-0.2)(2.8) = -0.2 x 2.8 = -0.56

(-3.6)(-0.55) = -3.6 x -0.55 = 1.98

6.3(-1.3) = 6.3 x -1.3 = -8.19

(-(0.2)(2.8) = -0.2 x 2.8 = 0.89

(-3.6)(-0.55) = -3.6 x -0.55 = 1.45

6.3(-0.7) = 6.3 x -0.7 = 5.6

2/3 (-4)(9) = 0.67 x -4 x 9 = -24