Question

6×+(2×-4)-2
7y-8-(5y-3)
4x-(-3×+9-2×)

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Answer 1

Resposta:

a) 6×+(2×-4)-2 => x = 0,75

b) 7y-8-(5y-3)  => y = 2,5

c) 4x-(-3×+9-2×) => x = 1

Explicação passo-a-passo:

$6x +(2x-4) -2 => 6x +2x -4 -2 => 8x -6 => 8x = +6 => x = \frac{6}{8} => x = 0.75$

$7y - 8 -(5y -3) => 7y- 8 -5y +3 => 2y -5 => 2y = +5 => y = \frac{5}{2} => y = 2,5$

$4x -( -3x + 9 -2x) => 4x +3x - 9 + 2x => 9x = +9 => x = \frac{9}{9} => x = 1$