Salut !
[-9 + (-3) × (-2)] + 4 = 1
500 × 17/100 = 85
85
EF = 50 × 200/62,5 = 160
AB = √(80²+60²) = 100
(190+160+210+140+170+200+150+220)÷8 = 180
3(x-6)=6 ⇒ x-6=2 ⇒ x=8
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Salut !
[-9 + (-3) × (-2)] + 4 = 1
500 × 17/100 = 85
85
EF = 50 × 200/62,5 = 160
AB = √(80²+60²) = 100
(190+160+210+140+170+200+150+220)÷8 = 180
3(x-6)=6 ⇒ x-6=2 ⇒ x=8