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Basic training for the first year of mathematics (People's Education Edition)
3 × (4 - 6 + 10)

3 × ((4 - 6) + 10)

3 × (4 - (6 - 10))

3 × (4 + 10 - 6)

3 × ((4 + 10) - 6)

3 × (4 + ( 10 - 6))

3 × ( 10 + 4 - 6)

3 × (( 10 + 4) - 6)

3 × ( 10 + (4 - 6))

3 × ( 10 - 6 + 4)

3 × (( 10 - 6) + 4)

(4 - 6 + 10) × 3

((4 - 6) + 10) × 3

(4 + 10 - 6) × 3

((4 + 10) - 6) × 3

(4 + ( 10 - 6)) × 3

( 10 + 4 - 6) × 3

(( 10 + 4) - 6) × 3

( 10 + (4 - 6)) × 3

( 10 - 6 + 4) × 3

(( 10 - 6) + 4) × 3

(-5 ×(- 13) + 7) ÷ 3

(7 -5 ×(- 13)) ÷ 3

(7 - (-5 × 13)) ÷ 3

(7 - 13 ×(-5)) ÷ 3