Прямоугольный треугольник с катетами 7 и 3
Ромб с диагоналями 7 и 3
А:15=54:(6*3)
А:15=54:18
Деление заменяем умножением!
А:15=54*1/18
А*1/15=3
А=45
Это точно!!!
10Х+15Х-7Х+10=4
18Х=4-10
18Х=-6
Х=-6:18
Х=-1/3
А16,Б30,В36,Г7.0+8*3=366*0+7*4+8*1=366*1+7*2+8*2=36г)6*2+7*1+8*1=27
1.
1) A dog can`t dance.
2) A cat can`t sing.
3) A frog can jump.
4) A horse can run.
5) A bird can fly.
7) A fish can swim.
2.
1) I can read.
2) My sister can`t sing.
3) My mummy can swim. My mummy can`t fly.
4) My daddy can`t dance.
5) My brother can climb.
6) My grandmather can run.
7) My grandfather can swing. My grandfather can`t sing.