Question

subtract(ii) a - 2b + c from 2a + 5b - 7c​

Answer 1

$\color{skyblue}{\bigstar \large\underline{\boxed{\bf\pink{Question:-}}}}$

$\tt \red{Subtract \: a - 2b + c \: from \: 2a + 5b - 7c}$

$\color{skyblue}{\bigstar \large\underline{\boxed{\bf\pink{Answer:-}}}}$

$\sf \green{a - 2b + c - 2a + 5b - 7c}$

$\sf \blue{ \mapsto (a-2a)-(2b + 5b)+(c-7c)}$

$\sf \purple{ \mapsto-a-(2b+ 5b) +( c - 7c)}$

$\sf \orange{ \mapsto- a + 3b + c - 7c}$

$\sf \color{gold} \mapsto-a + 3b - 6c$

$\pink{ \underline{ \boxed{ \bf{ \therefore \: The \: answer \: is -a + 3b - 6c}}}}$