Solve the following system of equations using the substitution method. The problem- y= -2x+11 3x + y = 1

Question

Solve the following system of equations using the substitution method.
The problem- y= -2x+11
3x + y = 18

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Thu Nguyệt 6 months 2021-09-04T20:45:27+00:00 1 Answers 3 views 0

Answers ( )

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    2021-09-04T20:47:22+00:00

    Answer:

    x = 7

    y = -3

    Step-by-step explanation:

    the first equation is already solved for ‘y’ so we can substitute ‘-2x+11’ for ‘y’ in second equation

    3x + (-2x + 11) = 18

    x + 11 = 18

    x = 7

    solve for ‘y’

    y = -2(7) + 11

    y = -14 + 11

    y = -3

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )