Question

（6/13*1.7+7/13*1.7）÷7/10 简算,表明简算方法.9*1/8÷9*1/8 1/8*58+1/8*41

Answer 1

（6/13×1.7+7/13×1.7）÷7/10

=[（6/13+7/13）×1.7]÷7/10

=1×1.7÷0.7

=17/7

9×1/8÷9×1/8

=(9÷9)×(1/8×1/8)

=1×1/64

=1/64

1/8×58+1/8×41+1/8

=1/8×58+1/8×41+1/8×1

=1/8×(58+41+1)

=1/8×100

=12.5

愿对你有所帮助!