SOLUTION: Can someone explain step by step how use substitution method of solving equations to find the ordered pairs? I am just not getting it.
6x -9y=19.5 7y-3x=11
Thank you
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Question 249068: Can someone explain step by step how use substitution method of solving equations to find the ordered pairs? I am just not getting it.
6x -9y=19.5 7y-3x=11
Thank you
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
SUBSTITUTE the equivalent value of a quantity from one equation to another
add 9y to 1st eqn ___ 6x = 9y + 19.5
multiply 2nd eqn by 2 ___ 14y - 6x = 22
SUBSTITUTE the equivalent value of 6x from the 1st eqn to the second eqn ___ 14y - (9y + 19.5) = 22
5y = 41.5 ___ y = 8.3
SUBSTITUTE to find x ___ 6x = 9(8.3) + 19.5 = 94.2 ___ x = 15.7
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