To find a number that makes the expressions equivalent, we have to solve for m.
12(–1.4m + 0.4)= m + 0.2 multiply 12 times all in parentheses (12*-1.4m) + (12*0.4)= m + 0.2 -16.8m + 4.8= m + 0.2 add 16.8m to both sides 4.8= 17.8m + 0.2 subtract 0.2 from both sides 4.6= 17.8m divide both sides by 17.8 0.2584269663= m
In total there are 12 marbles because 6+4+2=12 and it says you pick 2 marbles from the hat so you subtract 12-2 and that gives you 10 and it says the marbles aren't returned so therefore you are left with 10 marbles. Hope this helps .
