Câu hỏi: Tính: a) 34:112−56:13 b) −15:110−57.23−15 c) −0,4+225.−23+122 d) 125−0,62:49125.56−−13+12 Trả lời: a) 34:112−56:13=34:32−56.31 =34.23−56.31=12−52=−42=−2 b) −15:110−57.23−15 =−15.101−57.1015−315 =−2−57.715=−2−13 =−63−13=−73 c) −0,4+225.−23+122 =−25+125.−46+362 =−25+125.162=−24+125.136 =−25+115=−615+115=−515=−13 d) 125−0,62:49125.56−−13+12 =125−352:49125.56−−26+36 =125−352:49125.56−−26+36 =125−15252:49125.56−16 =−14252:49125.56−16 =−22.72522:7253.56−16 =−22.7254.5372.56−16 =−22.7254.5372.56−16 =46−16 =36=12 ====== **** mời các bạn xem câu tiếp bên dưới **** =====
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