Question

Me ajudem pfvr 15 pontos pra quem me ajudar

Answer 1

3
( -1/8) + ( -2/3)
-1/8 - 2/3 =
mmc = 8,3 = 24
divide pelo denominador e multiplica pelo numerador ( em todos os casos)
( -3 - 16)/24 =-19/24 ***
4
( -1/3) + ( +2/6)
-1/3 + 2/6 =
mmc = 6
( -2 + 2 )/6 = 0/6 = 0 zero ****
5
( -5/4) + ( +1/8) + ( +8/3) =
-5/4 + 1/8 + 8/3 ***
mmc = 24
( -30 + 3 + 64)/24 = 37/24 ***
6
( 2/5 ) + ( 1/4) + ( 2/3) =
mmc = 60
( 24 + 15 + 40)/60 = 79/60 ***
7
1/4 + 2/3 - 1/2 =
mmc = 12
( 3 + 8 - 4)/12 = 7/12 ****
8
3/5 + 8/7 - 1/2 =
mmc = 70
( 42 + 80 - 35)/70 = 87/70 ****