(x+7250)-3250=20870
x + 7250 – 3250 = 20870
x = 20870 + 3250 – 7250
x = 16870
25620+(13200-x)=30000
25620 + 13200 – x = 30000
– x = 30000 – 13200 – 25620
-x = -8820
x = 8820
(x+7250)-3250=20870
x + 7250 – 3250 = 20870
x = 20870 + 3250 – 7250
x = 16870
25620+(13200-x)=30000
25620 + 13200 – x = 30000
– x = 30000 – 13200 – 25620
-x = -8820
x = 8820