Question

g) 8y-6y-30=9y-9
h)4x +2 (13-×)=46
i) 2x+5=19
j) 8x-2=5×
k) 5 (x+2) - 3(x+6)=4
I)3 (y-3) + (y+1)=1(y-1)​

Answer 1

Explicação passo-a-passo:

g) 8y - 6y - 30 = 9y - 9

8y - 6y -9y = -9 + 30

-7y • (-1) = 21

y = 21 ÷ 7

y = 3

h)

i) 2x + 5 = 19

2x = 19 - 5

x = 14 ÷ 2

x = 7

k) 5 (x + 2) -3 (x + 6) = 4

5x + 10 -3x + 6 = 4

5x -3x = 4 -10 -6

2x = -12 •(-1)

x = 12 ÷ 2

x = 6