Solve the literal question 2a-b.=8b-4a for a

1 answer:

4 0

Just good ole algebraic manipulation
$2a - b = 8b - 4a$
First, Let's Combine Common Terms

$(2a + 4a) = (8b + 1b) \\ 6a = 9b$
Now Let's Divide

$\frac{6a}{6} = \frac{9b}{6} \\ a = \frac{9b}{6}$
Let's Simplify That Fraction

$a = \frac{9}{6} \times \frac{b}{1} \\$
Answer

$a = \frac{3b}{2} \:$

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Solve the system of equations using elimination/combinations-2x -y = -4 x + 2y =5

sweet-ann [11.9K]

Answer:

x = 1, y = 2

Step-by-step explanation:

In the elimination method to solve a system of linear equations, one of the two equations is added/subtracted to the other, in order to eliminate one variable from the equation.

In this problem, we have the following two equations:

$-2x-y=-4\\x+2y=5$