Resuelve las sumas y restas con distintos denominador, calculando el m. c.m. a) 7/4+5/6+1/3= b) 3/5-1/2+1/4= c) 3/8+5/6= d) 7/9+3/4-1/3= e) 5/7-3/4= Porfa es para el lunes

-4

step-by-step explanation:

(-4+8)=-(4-8)=-8+4=-4

l.ln.lln.k.nkl

step-by-step explanation:

a reflection across the x-axis , followed by the by a reflection across the y-axis , and then a scale dilation of 0.5 .

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4