Объяснение:
t2 + 10t - 5(2t+5)=200
t2+10t-10t-25=200
t2-25=200
t2=200+25
t2=225
t=+15
t=-15
t=15
t1=-15 , t2=15
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Объяснение:
t2 + 10t - 5(2t+5)=200
t2+10t-10t-25=200
t2-25=200
t2=200+25
t2=225
t=+15
t=-15
t=15
t1=-15 , t2=15