3x+5x+96=1568
8x=1568-96
8x=1472
X=1472:8
X=184
Вот и все
Go-went
see-saw
drink-drank
sing-sang
drive-drove
draw-drew
have-had
think-thought
do-did
buy-bought
.. ....... ..............
2012:х=2002+10
2090:х=2079+11
2002 и 2079 делатся на 77
2012:77=2002 и остаток 10
2090:77=2079 и остаток 11