1) Resolva as expressões numéricas a) 1×(1+7)-16:(1+3)= b) 7×(...

1) Resolva as expressões numéricas a) 1×(1+7)-16:(1+3)= b) 7×(9+5)-12:(4+2)= c) 2×(7+1)-32:(7+9)= d) 9×(3+7)-30:(9+6)= e) 4×(6+1)-10:(1+9)= f) 2×(4+6)-27:(3+6)= g) 9×(1+3)-15:(9+6)= h) 3×(6+3)-10:(2+8)= i) 7×(8+3)-30:(9+6)= ​