Question 114932
{{{((-6.9+7.7)/-2 )+1}}} Start with the given equation



{{{0.8/-2 +1}}} Add -6.9 to 7.7 to get 0.8



{{{(8/10)/-2 +1}}} Rewrite {{{0.8}}} as {{{8/10}}}



{{{(4/5)/-2 +1}}} Reduce



{{{(4/5)*(-1/2) +1}}} Multiply by the reciprocal



{{{-4/10 +1}}} Multiply 



{{{-2/5 +1}}} Reduce




{{{-2/5 +5/5}}} Rewrite {{{1}}} as {{{5/5}}}



{{{(-2+5)/5}}} Combine the fractions



{{{3/5}}} Add the numerators


So the answer is {{{3/5}}} or 0.6 in decimal form



So {{{((-6.9+7.7)/-2 )+1=3/5}}} or {{{((-6.9+7.7)/-2 )+1=0.6}}}