Question

Resolva as equações abaixo:
a) 5×-40=2-×

b)13y-5=11+9y

c)15×-13+11×=-26

d)4×+7=12×-9

e)3(×-2)-(1-×)=13

d6(4-t)-55=-5(2t+3)

*Preciso com urgencia

Answer 1

Bom dia

a) 5x - 40 = 2 - x

5x + x = 2 + 40

6x = 42

x = 7

b) 13y- 5 = 11 + 9y

13y - 9y = 11 + 5

4y = 16

y = 4

c) 15x - 13 + 11x =- 26

15x + 11x = -26 + 13

26x = -13

x = -1/2

d) 4x + 7= 12x - 9

12x - 4x = 7 + 9

8x = 16

x = 2

e) 3(x - 2) - (1 - x) = 13

3x - 6 - 1 + x = 13

4x = 13 + 7

4x = 20

x = 5

d 6*(4 - t) - 55 = -5*(2t + 3)

24 - 6t - 55 = -10t - 15

10t - 6t = -15 + 55 - 24

4t = 16

t = 4