The LCD is 72
8/9 = 64/72
7/8 = 63/72
Barry = 92
heidi = h
92 = h + 18
92 - 18 = h + 18 - 18
74 = h
heidi has 74 marbles
9/8 group- 18/16, 1/8x9
8/9 group- 1/18x16, 16/18
other- 1/8x1/9 :)
A number is divisible by 9 if and only if the sum of its number is a multiple of nine.
2+2+5=9 hence 255 is divisible by 9.
Area of a rectangle is lxb
(4x-3) * (2x+6) = 500
{(4x * 2x) + (4x * 6)} + {( -3 * 2x) + (-3 * 6)} - multiplying the factors
{8x^2 + 24x} + {-6x + -18}
8x^2 + 24x -6x -18 - removing the brackets
8x^2 +15x -18
Hope you found the answer helpful
