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20 votes
Can you substitute 2x+3y=4 and y=2

User Pepedou
by
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2 Answers

7 votes
7 votes

Answer:

x= -1

Explanation:

2x + 3y = 4

2x + 3(2) = 4

2x + 6 = 4

2x = 4 - 6

2x = -2

x = -2/2

x = -1

User Noneno
by
3.2k points
17 votes
17 votes

Answer: Yes. The answer is -1.

Explanation:

2x+3y=4, y=2

Would look like this: 2x+3(2)=4.

1. Multiply 3 x 2 = 6

2) 2x + 6 =4

3) Subtract 6 from both sides

4) Will look like this: 2x = -2

5) -2 / 2 = -1

Answer: -1

Equation: 2x+3(2)=4.

User Stuart Axon
by
3.4k points