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29 June, 22:46

Solve the system using addition

3x + 5y = 67

- 3x + y = - 18 8

The solution is x = and y=

+4
Answers (1)
  1. 30 June, 01:17
    0
    x = 8.95 y = 8.03

    Step-by-step explanation:

    3x + 5y = 67

    -3x + y = - 18.8

    Add them

    6y = 48.2

    divide by 6

    y = 8.03

    now substitute into one equation

    3x + 5 (8.03) = 67

    3x + 40.15 = 67

    subtract 40.15

    3x = 26.28

    divide by 3

    x = 8.95
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