Solve the system by substitution. y = -2 y = -9x + 21 Pls help!!!!

Question

Solve the system by substitution.
y = -2
y = -9x + 21
Pls help!!!!

in progress 0
Thành Đạt 4 years 2021-08-13T14:07:02+00:00 1 Answers 5 views 0

Answers ( )

  1. yenoanh
    0
    2021-08-13T14:08:52+00:00
    Reply

    Substitute y=-2 in the second equation:
    -2=-9x + 21
    -9x=-23
    x=23/9

Leave an answer

Browse

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