MEL B

28 divided by 2

you have to change the demoninator in the fraction to be the same as the fraction you are adding to it by multiplying the whole fraction by a whole munber. example 1/2 + 1/8 = 4*(1/2) + 1/8 = 4/8 + 1/8 = 5/8

fractions plus whole numbers you just change the whole number to a fraction example: 4 also equal 4/1, 8/2, 16/4 4 + 3/4 = 16/4 + 3/4 = 19/4

add like terms on same sides 7a - 4 + 2a --> 7a+2a = 9a equals 9a - 4 = 3a - 2 combine like terms from opposite sides by adding or subtracting on both sides 9a - 4 + 4 = 3a - 2 + 4 equals 9a = 3a + 2 9a - 3a = 3a - 3a + 2 equals 6a = 2 then divide out the...