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lilxjayyy
15.03.2020 •
Mathematics
Solve the system of equations. Start by
multiplying the second equation by 2.
Then subtract the first equation from the
second.
2x + 4y = 22
13x +2y = 21
Solved
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Ответ:
The solution to the system of equation is![(\frac{5}{6},\frac{61}{12} )](/tpl/images/0547/9639/dac51.png)
Explanation:
Given that the two equations are
and ![13x+2y=21](/tpl/images/0547/9639/5aeee.png)
We need to determine the solution to the system of equations.
It is also given that to start by solving the equations, by multiplying the second equation by 2.
Thus, we have,
Let us subtract the first equation from the equation (3), we have,
Thus, the value of x is![x=\frac{5}{6}](/tpl/images/0547/9639/54724.png)
Substituting
in the equation
, we have,
Simplifying, we have,
Thus, the value of y is![y=\frac{61}{12}](/tpl/images/0547/9639/9550f.png)
Hence, the solution to the system of the equation is![(\frac{5}{6},\frac{61}{12} )](/tpl/images/0547/9639/dac51.png)
Ответ:
c+0.04c (which can also be written as 1.04c, as they are like terms)
(28)+0.04 x (28)
28 + 1.12
=$29.12