It is -12, negative + negative is Negative unless if its with a positive it will cancel out
ex, -12 + 6= -6
Answer:
(8, - 5 )
Step-by-step explanation:
Given the 2 equations
3x + 4y = 4 → (1)
- x - 3y = 7 → (2)
Multiplying (2) by 3 and adding to (1) will eliminate the x- term.
- 3x - 9y = 21 → (3)
Add (1) and (3) term by term to eliminate x, that is
0 - 5y = 25
- 5y = 25 ( divide both sides by - 5 )
y = - 5
Substitute y = - 5 into either of the 2 equations and solve for x
Substituting into (1)
3x + 4(- 5) = 4
3x - 20 = 4 ( add 20 to both sides )
3x = 24 ( divide both sides by 3 )
x = 8
solution is (8, - 5 )
The answer is really simple just do 3 plus 5 which is 8 so the answer is 8x
27 is 6% of 450, since 1% of 27 is 4.5, 4.5 * 100 = 450
<span>multiplying and dividing is similar adding and subtracting. When the signs are different the answer is negative. When the signs are the same the answer is positive</span>
