10 x - 3 (-2 x - 2) = (6 x + 6) + 10 x = 16 x + 6:
{y = -2 x - 2
{16 x + 6 = -2
in the second equation, look to solve for x:
{y = -2 x - 2
{16 x + 6 = -2
subtract 6 from both sides:
{y = -2 x - 2
{16 x = -8
divide both sides by 16:
{y = -2 x - 2
{x = -1/2
substitute x = -1/2 into the first equation:
{y = -1
{x = -1/2
collect results in alphabetical order:
answer: {x = -1/2 , y = -1
Answer from: Quest
step-by-step explanation:
the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:
9/7 = (4x+12)/(4x-4)
9(4x-4) = 7(4x+12)
36x - 36 = 28x + 84
8x - 36 = 84
8x = 120
x = 15
Answer from: Quest
Sub to pewdiepie he needs to stay #1
Answer from: Quest
yeah i know the problem you need. i am taking it right now. the answer is step 3
~mickey
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