七分之五x95+七分之五x4-七分之五(简便运算··!)

问题描述:

七分之五x95+七分之五x4-七分之五(简便运算··!)

=5/7(95+4-1)
=5/7*98
=5*14
=70

七分之五x(95+4-1)=七分之五x98=70

=七分之五x(95+4-1)
=七分之五x98
=七分之五x7×14
=5×14
=70

=七分之五x(95+4-1)
=七分之五x98
=14X5
=70