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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: tính hợp lí (-157).(127-316)-127.(316-157)

Toán Lớp 6: tính hợp lí
(-157).(127-316)-127.(316-157)

Comments ( 2 )

  1. $@Shin$
    = (- 157). 127 + (-157). (-316) + (–127). 316 + (-127). (-157)
    = -157. 127 + 157. 316 – 127. 316 + 127. 157
    = [- (127. 157) + 127. 157] + (157. 316 – 127. 316)
    = 0 + 316. (157 – 127)
    = 316. 30
    = 9480

  2. Giải đáp:
    157). (127 – 316) – 127. (316 – 157)
    = (- 157). 127 + (-157). (-316) + (–127). 316 + (-127). (-157)
    = -157. 127 + 157. 316 – 127. 316 + 127. 157
    = [- (127. 157) + 127. 157] + (157. 316 – 127. 316)
    = 0 + 316. (157 – 127)
    = 316. 30
    = 9 480
    ≈Chúc bạn học tốt≈
     

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222-9+11+12:2*14+14 = ? ( )

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