解
The sum of 13 and twice a number is -19:Fin the number.
解
解答ステップ
Represent the number with
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"The 差 between a number and 7 is greater than-23."When a number is added to both the numerator and denominator of 1/4 the result is 2/3The 面積 of a rectangular pool is 3162m^2.If the length of the pool is 62m , what is its width?The sum of two numbers is 20 , and the 差 between their squares is 40:Find the two numbers.Last year 90 schools participated in the State Spelling Bee. This year there were 20% more schools participating than last year. How many schools participated in the spelling bee this year?