x + x + 2015 = 100 + 10 000
x + x + 2015 = 10 100
x + x = 10 100 - 2015
x + x = 8085
x = 8085 : 2
x = 4042,5
X x 2 +2015 = 10100
X x 2 = 10100-2015
X x 2 =8085
X = 8085 : 2
X = 4042
x+x+2015=100+10000
2x+2015=10100
2x=10100-2015
2x=8085
x=8085:2=4042,5
x+x+2015=100+10000
x+x+2015=10100
x+x=10100-2015
x+x=8085
x+x=8085/2
x=4042,5
x+x+2015=100+ 10000
2x+2015=10100
2x=10100-2015
2x=8085
x=8085: 2=4042,5
x + x + 2015 = 100 + 10000
2x + 2015 = 10100
2x = 10100 - 2015
2x = 8085
x = 4042,5
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