edual7545
23.11.2019 •
Mathematics
Solve.
{d+e=2d−e=4
use the substitution method.
there are an infinite number of solutions.
there is no solution.
the solution is (3, −1).
the solution is (5, 1).
Solved
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Ответ:
Option C is correct.
The solution is (3, -1)
Step-by-step explanation:
Substitution
Given the system of equation:
......[1]
......[2]
We can write equation [2] as;
d = e +4 ....[3]
Using substitution method;
Substitute the value of d in equation [1] we have;
Combine like terms;
Subtract 4 from both sides, we get
2e = -2
Divide both sides by 2 we get;
e = -1
Substitute the value of e = -1 in [1] we have;
d +(-1) = 2
d -1 = 2
Add 1 to both sides of an equation;
d = 3
Therefore, the solution for the given system of equation is, (3, -1)
Ответ:
just eat the slope
Step-by-step explanation:
and give me this boint