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Shtirlitz [24]
3 years ago
13

Solve the system of equation by adding or subtracting. x+4y=4 3x-4y=-4

Mathematics
2 answers:
Alecsey [184]3 years ago
8 0
X=<span><span><span>43</span>y</span>+<span><span>−4</span><span>3 hope this helped</span></span></span>
pychu [463]3 years ago
4 0
When solving for X
~Add -4 to both sides
X+4Y=4
-4. -4
---------------
X=-4y+4

~add 4 to both sides
3x-4y+4=-4+4
3x=4y-4
~divide both sides by three
3x=4y-4
--- ------
3. 3
X=3\4+ -4\3

When solving for Y
~add -x to both sides
x+4y+-x=4+-x
4y=-x+4
~divide both sides by 4
4yy=-x+4
----- ------
4. 4
Y=-1\4x+1

3x-4y=-4
~add -3x to both sides
3x-4yy+-3x=-4+-3x
-4y=-3x-4
----- -------
4. 4
Y=3\4x+1
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Answer:

Step-by-step explanation:

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difference means subtract

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