带括号的混合运算（2023-09-21）

带括号的混合运算（2023-09-21）：6×(84-78)= 75+(66-60)= 91+(67-66)= 45+(91-76)= 5×(63÷7)= 96-(53+29)= 29-(49-36)= 81-(96-59)= 22+(72-43)= 76-(64-41)= 42-(81-56)= 80-(32+19)= 27+(77-31)= 42-(81-56)= 80-(32+19)= 27+(77-31)= 42-(81-56)= 80-(32+19)= 27+(77-31)= 42-(81-56)= 84-(45-15)= 7×(54÷6)= 40-(37-19)= 44+(73-56)= 46+(67-18)= ...