问题
解答题
|
答案
(1)x+218=500,
x+218-218=500-218,
x=282;
(2)372-x=162,
372-x+x=162+x,
372=162+x,
372-162=162+x-162,
x=210;
(3)x÷15=80,
x÷15×15=80×15,
x=1200;
(4)141÷x=47,
141÷x×x=47×x,
141÷47=47x÷47,
x=3.
|
(1)x+218=500,
x+218-218=500-218,
x=282;
(2)372-x=162,
372-x+x=162+x,
372=162+x,
372-162=162+x-162,
x=210;
(3)x÷15=80,
x÷15×15=80×15,
x=1200;
(4)141÷x=47,
141÷x×x=47×x,
141÷47=47x÷47,
x=3.