Đáp án:
↓↓↓↓↓↓
Giải thích các bước giải:
X x 5 + X x 4 = 360 : 2
X x ( 5 + 4 ) = 180
X x 9 = 180
X = 180 : 9
X = 20
X x 9 -X x 4= 250
X x ( 9 - 4 ) = 250
X x 5 = 250
X = 250 : 5
X = 50
X x 5 +X x 4= 360 : 2
X x (5 + 4) = 180
Vậy X = 20
X x 9 - X x 4 = 250
X x (9 - 4) = 250
Vậy X = 50.
* Các bạn ơi cho mình hỏi : EF // AB => ^FCE = ^DEB ( đồng vị ) DE// AC => ^DBE = ^FEC ( ĐỒNG VỊ ) Các bạn xem mình làm như này đúng không ạ
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Xin các bạn hãy giúp mình vs Mình cần gấp trong hôm nay ạ
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