bonjour
A=(1-3.5)x7-(2.5+4.5)x(-3)
=-17.5+21
=3.5
B=1.7-[21x(-0.5)+14]x(-5)
=1.7-[3.5]x(-5)
=1.7+17.5
=19.2
C=5(3-7)+7x8-9÷(-13+8) (priorité à la multiplication et à la division)
=-20+56+1.8
=37.8
D=53x[-11.5-(-11.5)]-72÷(-8)
=53x[0]+9
=9
E=(32+18)÷(-4)-(-6-8)÷(4-11)
=-12.5-(-14)÷(-7)
=-12.5+14÷(-7)
=-12.5-2
=-14.5
F=-81÷(-0.9)+(-0.1)x3+10
=90-0.3+10
=99.7
