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A = -4 + (-6) – (-10)
B = 150 + 25 – (-25) + (-225) C = 18 + (-12) + (-6) + 13
D = (-3 + 10) – (4 – 15) – (-12 – 8) E = -23 – [40 – (3 – 19)]
F = 33 – 23 + 27 – 57 + 38 – (-12)

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MARGESIMPSON1

Bsr

A = -4+(-6)-(-10)

A = -4-6-(-10)

A = -4-6+10

A = -10+10

A = 0

B = 150+25-(-25)+(-225)

B = 150+25+25+(-225)

B = 150+25+25-225

B = 200-225

B = -25

C = 18+(-12)+(-6)+13

C = 18-12+(-6)+13

C = 18-12-6+13

C = 31-18

C = 13

D = (-3+10)-(4-15)-(-12-8)

D = 7-(4-15)-(-12-8)

D = 7-(-11)-(-12-8)

D = 7-(-11)-(-20)

D = 7+11-(-20)

D = 7+11+20

D = 18+20

D = 38

E = -23-[40-(3-19)]

E = -23-[40-(-16)]

E = -23-[40+16]

E = -23-[56]

E = -23-56

E = -79

F = 33-23+27-57+38-(-12)

F = 33-23+27-57+38+12

F = 30

Voilà !