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a) 5+ ×:2 = 5
x:2 = 5-5
x= 0 (2)
×=0
b) 8× -49 = 3× +11
8× -3× = 49 + 11
5× = 60
×= 60/5 = 12
c) 6 +2× =27 -×
3× = 27-6
3× = 21
×= 21/3 = 7
3) 3 (×) + 2^2 = 30
3× + 4 = 30
3×= 30-4
3×=26
×=26/3 = 8.666666 ( sere honesta no entendí la redacción de problema )
4)
a)3(x+2)=2(x+2)+2
3× + 6 = 2× + 4 + 2
3×+6 = 2×+6
3×-2× = 6-6
×=0
b)4(x-1)+3(x+5)=2x+41
4× -4 + 3× +15 = 2× +41
7× +11 = 2× +41
5× = 30
×= 30/5 = 6
c)6(2+3x)+3(x-4)=63
12 + 18× + 3× - 12 =63
21× = 63
×= 63/21=3