3 years ago

Use substitution to solve the system. X= 2y-5 4x+3y=-9

Mathematics

1 answer:

sergey [27]3 years ago

6 0

Step-by-step explanation:

x=2y-5 - equation 1

4x+3y=-9 -equation 2

Replace equation 1 in equation 2

4(2y-5)+3y=-9

8y-20+3y=-9

11y=-9+20

11y=11

y=11/11

y=1

If y=1, therefore x=2(1)-5=-3

x=-3,y=1

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