P= (-4) + (-7) - (-8) - (+7) + (-2) G= -6 + 7 - 2,5 + 7,5 - 3,2

R = (-9) - (+4) + (-2) - (-5) + (+4)

S = -8,2 + (-2,4) – (-8) + 7 - 5

T = (+4) - (-2) + (+5) - (-7) - (+5)

U = -6 + 9 - (-8) + (-4)

V = (+16) - (-5) + (-6) - (-9) + 7 - (-2)

W = -7 - 5 - 3,5 + 41,45

X = 8 + 9 – 7 – 1 - 5 - 6 + 7 – 12,5

Y = 17 + 8 - (-8) + (-4) + (+8)

Z = -5 – 7 – 12,45 + 17,65 – 15, 1

Avec les étapes des calculs s'il vous plaît.​
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