3(-2a-4)+3a
Help please

-3a-12

Step-by-step explanation:

start by distributing ( or multiplying) the 3 into the numbers in the parenthesis but NOT to 3a (bc it's not in the parenthesis):

3(-2a-4)+3a —> -6a-12+3a

**Distributing the 3 into the parenthesis simplifies the expression in order to make it easier to solve.

Then you can start combining like terms (-6a and 3a):

-6a-12+3a —> -3a-12

-3a-12 is your answer.

**Just a side note, some students may think they have to keep going because they think that you have to divide the 3 from both numbers to simplify it completely, but you don't. Because this isn't an equation where you have to solve for 'a', -3a-12 is the furthest you can go with this answer.

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?