Question

Explain it it's Important​

Answer 1

Answer:

sorry dear I can't say this answer

Step-by-step explanation:

like it and keep it brainlist

Answer 2

Answer:

(a+b)+c:a+(b+c)

(-1/2+3/4)+5/7 : -1/2+(3/4+5/7)

(-1×4+3×2/4×2)+5/7 :-1/2+(3×7+5×4/7×4)

(-4+6/8)+5/7 : -1/2+(21+20/28)

(2/8)+5/7 : -1/2+(41/28)

1/4+5/7 :-1/2+3/2

1×7+4×5/7×4 :-1+3/2

7+20/28 :4/2

27/28 :1/2

:.27/28. is not equal to 1/2