3 years ago

Solve the system using elimination 4x-7y=3 x-7y=-15

Mathematics

2 answers:

BigorU [14]3 years ago

6 0

The answer is 6,3
.......

ehidna [41]3 years ago

5 0

Answer: x=6 and y=3

Step-by-step explanation:

4x - 7y = 3 -------(1)

x - 7y = -15 ------(2)

equation(1) - equation (2)

3x = 18

Divide bothside by 3

x = 18/3

x= 6

also, multiply equation (2) by 4

4x - 28y = -60--------------(3)

subtract equation(3) from equation(1)

21y = 63

divide bothside by 21

y = 63/21

y = 3

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