Shairamaegalang12viz
Answered

elimination method

1.3x + 3y = 9
x - 3y =3

2. 2x - 7y = 6
-2x + y = - 6

3. 2x - 5y = 5
x + 3y = 8​

Sagot :

Deguzmankeithhillaryviz

Answer:

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\tt \large 13) \: ( + 21) - ( - 11) = \green{32}13)(+21)−(−11)=32

\tt \large 14) \: ( + 91) - ( - 40) = \green{131}14)(+91)−(−40)=131

\tt \large 15) \: (70) - ( 30) = \green{40}15)