Hilma Pestano: Let x be the number of magazinesJulia has 1/4 xKevin has 3/5 xand Romeo has 90so 1/4 x + 3/5x + 90 = xFirst I want to get rid of the fractions so I am going to multiply both sides by 20 since 4 and 5 both go into that evenly.20 *[1/4 x + 3/5x + 90] = 20 * x5x + 12x + 1800 = 20xCombine like terms17x + 1800 = 20xSubtract 17x from each sideand we get 3x = 1800Dive each side by 3x = 600so 600 magazines altogether...Show more
Rosalva Steinmann: First you have to convert 1/4 and 3/5 to a common denominator:1/4=5/203/5=12/20Then add those together:5/20+12/20=17/20Then add 90:90 17/20or 90.85...Show more
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