Question

b: x-590:5+2369=7894

tính bằng cách thuận tiện

987 - ( 648 + 187)

956 - 346 -154

Answer 1

b.

\(x-590:5+2369=7894\)

\(x-590:5=5525\)

\(x-590=5525.5\)

\(x-590=27625\)

\(x=27625+590 \)

\(x = 28215\)

c.

\(987 - ( 648 + 187)\)

= \(987 - 648 - 187\)

\(= (987-187)-648\)

= \(800 - 648 \)

= 152

d.

\(956 - 346 -154 \)

= 456

Answer 2

987 - ( 648 + 187)=152

956 - 346 -154=456