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choli [55]
3 years ago
6

5x-4y+-13 and 3x-4y+-11

Mathematics
2 answers:
Aleksandr [31]3 years ago
5 0
1) 5x-4y-13=3x-4y-11 
2) 5x-4y=3x-4y-11+13    (Add 13 to both sides) 
3) 5x-4y+4y=3x-11+13   (Add 4y to both sides)
4) 5x-3x=-11+13 (Subtract 3x from both sides (the -4y and +4y cancel each other))
5) 2x=2                            (subtract 5x-3x and add -11+13)
6) x=1                              (Divide both sides by 2)

x=1  y=0  or  (1,0)

drek231 [11]3 years ago
3 0
5x + -4y = 13

Solving
-5x + -4y = 13

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '4y' to each side of the equation.
-5x + -4y + 4y = 13 + 4y

Combine like terms: -4y + 4y = 0
-5x + 0 = 13 + 4y
-5x = 13 + 4y

Divide each side by '-5'.
x = -2.6 + -0.8y

Simplifying
x = -2.6 + -0.8y
Simplifying
3x + -4y + -11 = 0

Reorder the terms:
-11 + 3x + -4y = 0

Solving
-11 + 3x + -4y = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '11' to each side of the equation.
-11 + 3x + 11 + -4y = 0 + 11

Reorder the terms:
-11 + 11 + 3x + -4y = 0 + 11

Combine like terms: -11 + 11 = 0
0 + 3x + -4y = 0 + 11
3x + -4y = 0 + 11Combine like terms: 0 + 11 = 11
3x + -4y = 11

Add '4y' to each side of the equation.
3x + -4y + 4y = 11 + 4y

Combine like terms: -4y + 4y = 0
3x + 0 = 11 + 4y
3x = 11 + 4y

Divide each side by '3'.
x = 3.666666667 + 1.333333333y

Simplifying
x = 3.666666667 + 1.333333333y
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