How to find value of unknown 7 to 21 equals 10 to x Ratio and Proportions

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Grade 7:    • Ratios and Proportions Basic Concept ...   • Ratio and Proportion:    • Proportion and Scale Factor C6   • PLAYLIST Ratio and Proportions Excellent Examples:    • Ratio and Proportion Part 1 with 21 Q...   •    / @mathematicstutor   • Anil Kumar Math Classes: [email protected] • #ratio_proportion_TIPS #ratio_proportion #anilkumarmath #globalmathinstitute #prealgebra #grade7mathanilkumar #grade8math #GCSE #SAT #StrategyMath #Algebra #EQAO #IBSLmath • Percent Problem Solving:    • Percent Fractions and Percent Change ...      / @mathematicstutor  

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