3 years ago

Use substitution to solve the system of equations.

Mathematics

2 answers:

polet [3.4K]3 years ago

8 0

The answer is (3,-6)

murzikaleks [220]3 years ago

4 0

X-3*(-2x)=21
x+6x=21
7x=21
X=21/7
X=3
Now you substitute x=3 in the other equation
Y=-2*3
Y=-6

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