placer les parenthèses manquantes écrire la vérification merci 2x3+5x4=64 3x2+5x5-10=95 2+7x3-2+7x3=4 2+7x3-2+7x2=9
2x(3+5)x4=64
3x(2+5)x5-10=95
2+(7x3)-2+(7x3)=4
2+(7x3)-2+(7x2)=9
2x(3+5)x4= 2 x8x4= 8x8=64
3x(2+5)x5-10=3x7x5-10= 21x5-10= 105-10= 95
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2x(3+5)x4=64
3x(2+5)x5-10=95
2+(7x3)-2+(7x3)=4
2+(7x3)-2+(7x2)=9
2x(3+5)x4= 2 x8x4= 8x8=64
3x(2+5)x5-10=3x7x5-10= 21x5-10= 105-10= 95