Matemática
biapgalvao
6

1) resolva as equações. a)4×-7=8×-2 b)2×+1=4×-7 c)9×+9+3×=15 d)3×-2=4×+9

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(1) Respostas
weric

a) 4x-8x=-2+7 -4x=5 x=-5/4 b)2x-4x=-7-1 -2x=-8 x=8/2=4 c)12x=15-9 x=6/12=1/2 d)3x-4x=9+2 -x=11 x=-11

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