Verified answer

Resposta:

Explicação passo a passo:

B=

3 5/7=

21/7 +5/7=

26/7

C=

2 1/5=

10/5 +1/5=

11/5

A+B-C=

3+26/7-11/5=

105/35 +130/35 -77/35=

235/35-77/35=

158/35