Question

A) 5x + 5x + 3x + 4x +1
B) 10x - 3 - 2x + 3x - 13
C) 11 - 6y = 2y + 7y + 26
D) 7 (x + 3) = 20
E) 2y + 13 = 5y + 4

Proszę jak naj szybciej!

Answer 1

A) 5x + 5x + 3x + 4x +1 W tych dwóch chyba brakuje znaku "=" :)
B) 10x - 3 - 2x + 3x - 13

C) 11 - 6y = 2y + 7y + 26
-15= 15y /:15
y= -1

D) 7 (x + 3) = 20
7x+21=20
7x=-1/:7
x=-1/7

E) 2y + 13 = 5y + 4
9=3y/:3
y= 3

Answer 2

A) 5x + 5x + 3x + 4x +1= 17x + 1
B) 10x - 3 - 2x + 3x - 13= 11x - 16
C) 11 - 6y = 2y + 7y + 26
11 - 6y = 9y +26
-15y=15
y=-1
D) 7 (x + 3) = 20
7x +21 = 20
7x = -1
x=-1/7
E) 2y + 13 = 5y + 4
-3y = -9
y=3

Answer 3

A)
17x +1
b)
11x-16
c)
11-6y = 9y + 26 /+6y
11 = 15y +26 /26
-15 = 15y /:15
-1 = y
d)
7(x+3) = 20
7x+21 = 20 /-21
7x = -1 / :7
x = -1/7
e)
2y+13 =5y +4 /-13
2y = 5y -9 /-5y
-3y = -9 /:(-3)
y= 3