6道有理数混合运算那位同学帮我算计算题?1.|-7/4-(-3/4)|-(|-5/4|-|-3/4|)；2.22/5-(11/7-3/5-39/7)；3.2+1/4+(-4-3/8+3/4)；4.-(1/2-4.75)-(5又3/8-1/4+0.5)；5.2又4/7-(-3/7+3/5-1)；6.2又5/6-(2-1又1/6+1又1/2).急用急用!

Question

6道有理数混合运算
那位同学帮我算计算题?1.|-7/4-(-3/4)|-(|-5/4|-|-3/4|)；2.22/5-(11/7-3/5-39/7)；3.2+1/4+(-4-3/8+3/4)； 4.-(1/2-4.75)-(5又3/8-1/4+0.5)；5.2又4/7-(-3/7+3/5-1)；6.2又5/6-(2-1又1/6+1又1/2).急用急用!

Answer 1

|-7/4-(-3/4)|-(|-5/4|-|-3/4|)=|-7/4+3/4|-(5/4-3/4)=|-1|-1/2=1-1/2=1/222/5-(11/7-3/5-39/7)=22/5-11/7+3/5+39/7=(22/5+3/5)+(39/7-11/7)=5+4=92+1/4+(-4-3/8+3/4)=2+1/4+(-4)+(-3/8)+3/4=[2+1/4+3/4+(-4)]+(-3/8...