用简便方法计算：（1）(79-56+318)÷118-1.5×6（2）（-0.25）2÷（-12）4+（138-3.75）×24．

Question

用简便方法计算：
（1）((7)/(9)-(5)/(6)+(3)/(18))÷(1)/(18)-1.5×6
（2）（-0.25）²÷（-(1)/(2)）⁴+（1(3)/(8)-3.75）×24．

Answer 1

（1）((7)/(9)-(5)/(6)+(3)/(18))÷(1)/(18)-1.5×6
=（(7)/(9)-(5)/(6)+(3)/(18)）×18-9
=(7)/(9)×18-(5)/(6)×18+(3)/(18)×18-9
=14-15+3-9
=-7；
（2）（-0.25）²÷（-(1)/(2)）⁴+（1(3)/(8)-3.75）×24
=(1)/(16)÷(1)/(16)+(11)/(8)×24-(15)/(4)×24
=1+33-90
=-56．