Câu hỏi của 2TQEFSCF32

a) \(x+\left[58+\left(-29\right)\right]=\left|-46\right|\)\(\Rightarrow x+\left(58-29\right)=46\)\(\Rightarrow x+29=46\)\(\Rightarrow x=46-29\)\(\Rightarrow x=17\)b) \(36+\left(100-5x\right):4=51\)\(\Rightarrow\left(100-5x\right):4=51-36\)\(\Rightarrow\left(100-5x\right):4=15\)\(\Rightarrow100-5x=15\cdot4\)\(\Rightarrow100-5x=60\)\(\Rightarrow5x=100-60\)\(\Rightarrow5x=40\)\(\Rightarrow x=40:5\)\(\Rightarrow x=8\)\(\text{#}Toru\)Câu trả lời: a) \(x+\left[58+\left(-29\right)\right]=\left|-46\right|\)\(\Rightarrow x+\left(58-29\right)=46\)\(\Rightarrow x+29=46\)\(\Rightarrow x=46-29\)\(\Rightarrow x=17\)b) \(36+\left(100-5x\right):4=51\)\(\Rightarrow\left(100-5x\right):4=51-36\)\(\Rightarrow\left(100-5x\right):4=15\)\(\Rightarrow100-5x=15\cdot4\)\(\Rightarrow100-5x=60\)\(\Rightarrow5x=100-60\)\(\Rightarrow5x=40\)\(\Rightarrow x=40:5\)\(\Rightarrow x=8\)\(\text{#}Toru\)