(X+7)-25=13 198-(x+4)=120 140:(x-8)=7 4 (x+41)=400 11 (x-9)=77 5 (x-9)=350 2x-49=5.3mů2 200-(2x+6)=4mů3

(X+7)-25=13
198-(x+4)=120
140:(x-8)=7
4 (x+41)=400
11 (x-9)=77
5 (x-9)=350
2x-49=5.3mů2
200-(2x+6)=4mů3

0 bình luận về “(X+7)-25=13 198-(x+4)=120 140:(x-8)=7 4 (x+41)=400 11 (x-9)=77 5 (x-9)=350 2x-49=5.3mů2 200-(2x+6)=4mů3”

  1. Đáp án:

    1. `(x+7)-25=13`

    `<=>x+7=38`

    `<=>x=31`

    2.`198-(x+4)=120`

    `<=>x+4=78`

    `<=>x=74`

    3.`140:(x-8)=7`

    `<=>x-8=20`

    `<=>x=28`

    4.`4 (x+41)=400`

    `<=>x+41=100`

    `<=>x=59`

    5.`11 (x-9)=77`

    `<=>x-9=7`

    `<=>x=16`

    6.`5 (x-9)=350`

    `<=>x-9=70`

    `<=>x=79`

    7.`2x-49=5.3^2`

    `<=>2x-49=5.9`

    `<=>2x-49=45`

    `<=>2x=94`

    `<=>x=47`

    8.`200-(2x+6)=4^3`

    `<=>2x+6=200-4^3`

    `<=>2x+6=200-64`

    `<=>2x+6=136`

    `<=>2x=130`

    `<=>x=65`

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