Question 542526
4*10+1=41 41/10
2*5+2=12 12/5
3*2+1=7 7/2
12*2+1=25 25/2
{{{(41/10)+(12/5)+(7/2)+(x)=(25/2)}}} find common denom and multiply it to everything (10)

{{{(41/10)(10)+(12/5)(10)+(7/2)(10)+(x)(10)=(25/2)(10)}}} do cancelations
{{{41+12(2)+7(5)+10x=25(5)}}}multiply
{{{41+24+35+10x=125}}} add
{{{100+10x=125}}}subtract 100
{{{10x=25}}}divide by 10
{{{x=2.5}}}or {{{x=5/2}}}or {{{x=2}}}{{{1/2}}}