Sagot :
18-(6-4)
=18-2
=16
(18-6)-4
=12-4
=8
30×(6÷2)
=30×3
=90
(30×6)÷2
=180÷2
=90
4(15-(8+3))
=4(15-11)
=4×4
=16
(10+4)÷(2×5)
=14÷10
=1,4
18-(6-4)
=18-2
=16
(18-6)-4
=12-4
=8
30×(6÷2)
=30×3
=90
(30×6)÷2
=180÷2
=90
4(15-(8+3))
=4(15-11)
=4×4
=16
(10+4)÷(2×5)
=14÷10
=1,4