-10x – 2y = -30 3x + 2y = 9 X=

Question

-10x – 2y = -30
3x + 2y = 9
X=

in progress 0
RuslanHeatt 5 years 2021-08-11T23:08:55+00:00 1 Answers 29 views 0

Answers ( )

  1. Verity
    0
    2021-08-11T23:10:04+00:00
    Reply

    Answer: x = 3

    Step-by-step explanation:

    -10x – 2y = -30

    3x + 2y =9

    use elimination method…

    -2y and 2y = 0

    -10x = – 30

    3x = 9

    add together…

    -7x = -21

    solve…

    x= 3

Leave an answer

Browse

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