1) 5\12+4\15 2)3\4+5\18 3)2\26+3\39 4)7\34+5\51 5)4\210+5\140 6)7\450+8\180 7)9\180+7\120 Заранее спасибо!!! Даю 40 баллов!!!)

1)[latex] \frac{5}{12} + \frac{4}{15} = \frac{41}{60} [/latex] 2)[latex] \frac{3}{4} + \frac{5}{18} =1 \frac{1}{36} [/latex] 3)[latex] \frac{2}{26} + \frac{3}{39} = \frac{2}{13} [/latex] 4)[latex] \frac{7}{34} + \frac{5}{51} = \frac{31}{102} [/latex] 5)[latex] \frac{4}{210} + \frac{5}{140} = \frac{23}{420} [/latex] 6)[latex] \frac{7}{450} + \frac{8}{180} = \frac{3}{50} [/latex] 7)[latex] \frac{9}{180} + \frac{7}{120} = \frac{13}{120} [/latex]

1) 5/12+4/15=25/60+16/60=41/60 2) 3/4+5/18=27/36+10/36=37/36=1 1/36 3) 2/26+3/39=12/156+12/156=24/156=4/26 4) 7/34+5/51=42/204+20/204=62/204=31/102 5) 4/210+5/140=16/840+30/840= 46/840=23/420 6) 7/450+8/180=14/900+40/900=54/900=6/100 7) 9/180+7/120=18/360+21/360=39/360=13/120