leiroa798
contestada

PLEASE HELP DUE IN 10 MIN!!!!
Solving systems by elimination

1.) x+2y=10

x+4y=14


2.) 3x+y=9

y=3x+6


3.) 4x+5y=15

6x-5y=18


4.) 5x=7y

x+7y=21

Respuesta :

ilovehotmoms88
1) x+2y=10 -> 2x+4y=20
SSS
x=6
6+4y=14
4y=8
y=2

Same method for the rest, just do some multiplication on each one to make either the y or the x equal. If they’re the same sign (pos or neg) use SSS (same sign subtract), if not use DSA (different sign add). You may need to move some of the equations around first^^
1: (38, 24)
2: (1/2, 7.5)
3: (3.3, .35)

I am not sure what the answer to number four is, however I have uploaded my work for the other ones!!!
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