问题 Simplify the expression 7212qr2 Evaluate q×735285×r2×2Covert the mixed number to an improper fraction 更多步骤 Convert the expressions 735285Multiply the denominator of the fraction by the whole number and add the numerator of the fraction 357×35+285Multiply the terms 35245+285Add the terms 35530 q×35530r2×2Multiply the terms 更多步骤 Evaluate 35530×2Multiply the numbers 35530×2Multiply the numbers 351060Cancel out the common factor 5 7212 q×7212r2解题方案 7212qr2 显示解题方案