Question

Quanto é?
A)4×-3-×+8=11
B)6 (×-2)=12
C)9+2 (5×-4)=21
D)10×+4 (3-2×)-6=8
E)3 (5+3×)+5 (-×-1)=22
F)2 (9×-4)-7+(6-5×)3=18

Answer 1

A)4×-3-×+8=11 ==> 3x = 11-5  3x = 6 ==> x = 2
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B)6 (×-2)=12 ==> 6x - 12 = 12 ==> 6x = 12+12 ==> 6x = 24 ==> x = 4
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C)9+2 (5×-4)=21 => 9 + 10x - 8 = 21 ==> 10x = 21 -1 ==. 10x = 20 ==> x= 2
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D)10×+4 (3-2×)-6=8 = 10x + 12 - 8x - 6 = 8 ==> 2x = 8-6 ==> 2x = 2 ==>x = 1
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E)3 (5+3×)+5 (-×-1)=22 =>15 + 9x - 5x - 5 = 22 =>4x=22-10=>4x=12=>x = 3
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F)2(9×-4)-7+(6-5×)3=18=>18x-8-7+18-15x=18=>3x=18-21=>3x=-3 =>x= - 1 

Answer 2

Resposta:

A)4×-3-×+8=11 ==> 3x = 11-5  3x = 6 ==> x = 2

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B)6 (×-2)=12 ==> 6x - 12 = 12 ==> 6x = 12+12 ==> 6x = 24 ==> x = 4

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C)9+2 (5×-4)=21 => 9 + 10x - 8 = 21 ==> 10x = 21 -1 ==. 10x = 20 ==> x= 2

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D)10×+4 (3-2×)-6=8 = 10x + 12 - 8x - 6 = 8 ==> 2x = 8-6 ==> 2x = 2 ==>x = 1

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E)3 (5+3×)+5 (-×-1)=22 =>15 + 9x - 5x - 5 = 22 =>4x=22-10=>4x=12=>x = 3

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F)2(9×-4)-7+(6-5×)3=18=>18x-8-7+18-15x=18=>3x=18-21=>3x=-3 =>x= - 1