Question

que alguien me ayude por favor

Answer 1

a) 1/3+2×(1/4-1/3)+2/4÷1/3
1/3+2×(3/12-4/12)+1/2÷1/3
1/3+2×(-1/12)+1/2÷1/3
1/3+(-1/6)+1/2×3/1
1/3+(-1/6)+3/2
2/6+(-1/6)+9/6=10/6=5/4
b) 2/4-1/2+(3/5-6/10)+2/5
1/2-1/2+(6/10-6/10)+2/5
1/2-1/2+0/10+2/5
5/10-5/10+0/10+4/10=4/10