Question

15. Simplify: 3(a + b) – 2(2a + b) + 4a -7​

Answer 1

$hope \: it \: helps$

Answer 2

Answer:

3(a + b) - 2(2a+b) + 4a -7 = 7

is the answer

simplification :-

3a + 3b -4a -2b +4a -7

= 3a + 4a -4a +3b-2b-7

= 3a +b -7

= 3a +b= 7

Now by substitution method

write b in the form of a means ,

b = 7-3a

Now substitute it into the equation

3a + 7 - 3a = 7