4 years ago

Solve y=3x-7 and 4x+3y=18 by substitution

Mathematics

1 answer:

sveta [45]4 years ago

7 0

Answer:

x = 3 and y = 2

Step-by-step explanation:

y = 3x - 7

substituting for y in 4x + 3y = 18, we will have

4x + 3(3x -7) = 18

4x + 9x - 21 = 18

13x = 18 + 21

13x = 39

x = 3

Substituting for x in y = 3x -7, we have

y = 3(3) - 7

y = 9 - 7

y = 2

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