Rearrange w=3(2a+b)-4 to make 'a' the subject

a = w - 3b + 4/6

Step-by-step explanation:

from the equation w=3(2a+b)-4 to make "a" the subject of the formulae

we have,

w = 6a + 3b - 4

by rearranging

6a = w-3b + 4

since we are making a the subject, we divide both sides by 6

we have

6a/6 = w - 3b + 4/6

therefore;

a = w - 3b + 4/6

a

step-by-step explanation:

proportions are fractions that equal to each other. so if two fractions are the same, they are proportional.

let's check the answers to see if they are proportional.

question a is not proportional because you can't turn 1.5/3 to 3/9. if you try to multiply 1.5/3 by 2 or 3, you wont get 3/9. it's impossible to make the fractions the same.

question b is not proportional because you can't turn 22/33 to 4/6. 33 can't go into 6.

question c is proportional because when you multiply 2 and 3 by 71, you would get 142/213, and those fractions equal to each other

question d is proportional because when you divide 14 and 7 by 2, you would end up with 7/3.5, and those fractions equal to each other.