3 years ago

Please use elimination 3х - бу = 18 2x + 2y = 6

Mathematics

2 answers:

Molodets [167]3 years ago

8 0

Answer:

x = 4

Step-by-step explanation:

3x - 6y = 18

2x + 2y = 6 -> 3(2x + 2y = 6)

3x - 6y = 18 -> Cross out - 6y

6x + 6y = 18 -> Cross out + 6y

9x = 36 -> Divide 9 on both sides.

X = 4

Semmy [17]3 years ago

5 0

Answer: x=4, y=-1

Step-by-step explanation:

Make a table of solutions that work for 2x+2y=6

0,3

1,2

2,1

3,0

4,-1

Now try them in 3x-6y=18

The one that works is 4,-1

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