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4 years ago

HELP ASAP SHOW WORK PLZ !!! Multiply first

Mathematics

2 answers:

Ostrovityanka [42]4 years ago

6 0

-2(x + 6y = 1)

2x - 3y = 32
-2x - 12y = -2
- 15y = 30

y = -2

x + 6y = 1
x + 6(-2) = 1
x - 12 = 1

x = 13

vlada-n [284]4 years ago

4 0

solve by elimination

we can see that we can eliminate y from both equations by mulitpying the 2nd equation by 2 and adding them

x+6y=1

4x-6y=64 +

5x+0y=65

5x=65

divide both sides by 5

x=13

subsitute back

x+6y=1

13+6y=1

minus 13 both sides

6y=-12

divide by 6 both sides

y=-2

solution is x=13 and y=-2 or (13,-2) is the solution

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_____

Comment on the method

Often it works well to add the integer parts and fractional parts separately, then make adjustments in the final result.

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