Question

В фото задание, помогите пожалуйста!!

Answer 1

1.

$a + b + c = a + 3a + (a + 10) = 5a + 10 = 40\\5a = 30\\a = \frac{30}{5} =6\\b=3a=3*6=18\\c=a+10=6+10=16$

2.

$a + b + c = 2x + 3x+ 4x = 9x = 36\\x = \frac{36}{9} =4\\a = 2x=2*4=8\\b=3x=3*4=12\\c=4x=4*4 = 16$