1)aider moi svp réduire les expressions suivantes
I= 3×(5× x + 1) -2
j=6×y+7×y
h=4×z - z+2×z
2) o= 9×x - 6 × x
p= 13×a+8×a+a
q= b+5×b
r=26×c +4×c - 9 × c
I= 3×(5× x + 1) -2
j=6×y+7×y
h=4×z - z+2×z
2) o= 9×x - 6 × x
p= 13×a+8×a+a
q= b+5×b
r=26×c +4×c - 9 × c
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