Question

4 x=-12
7x=-21
13x = 13
2x = 14​

Answer 1

Explicação passo-a-passo:

4x = -12

x = -12/4

x = -3

7x = -21

x = -21/7

x = -3

13x = 13

x = 13/13

x = 1

2x = 14

x = 14/2

x = 7

D nada...

Answer 2

$a)4 x=-12 \\ x = \frac{ - 12}{4} = 3 \\ x = 3 \\ \\</p><p>b)7x=-21 \\ x = \frac{ - 21}{7} = 3 \\ x = 3 \\ \\</p><p>c)13x = 13 \\ x = \frac{13}{13} = 1 \\ x = 1 \\ \\</p><p>d)2x = 14 \\ x = \frac{14}{2} = 7 \\ x = 7$

Bons estudos!!