4 Effectue les calculs suivants, en regroupant les termes de même signe. B = (-15) + (- 118) + (+47) A = (-4) + (+6) + (-3) B = A = A = D = A = D = (+ 1,9) + (+ 2,4) + (-8,6) + (+12,7) D= B = D= B = ****** E = E = ******* A C = (+ 1,8) + (-1,2) + (+ 3,4) C = E = (+8,92) + (-22) + (+12) + (-8,92) E = C = C =​
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