"378-156等于几"...378-156等于几

　"672-157等于几"...672-157等于几

　"786+153等于几"...786+153等于几

　"735-197-257等于几"...735-197-257等于几

　"762+156等于几"...762+156等于几

　"278+156等于几"...278+156等于几

　"723-186等于几"...723-186等于几

　"372+154等于几"...372+154等于几

　"637-259等于几"...637-259等于几

　"725-386等于几"...725-386等于几