Question

3.(2x-5)=9-2x
y+4=-15
10-4x=9+2x
1a-3a+5a=12
5(y-3)=2y+3
3(2y-5)=9
-8(x-1)=16
4(2x-3)=5(x+3)

me ajudem

Answer 1

3( 2x - 5 ) = 9 - 2x
6x - 15 = 9 - 2x
6x + 2x = 9 + 15

8x = 24

x = 24 / 8

x = 3

y + 4 = -15
y = - 15 - 4
y = - 19

1a - 3a + 5a = 12

3a = 12

a = 12 / 3

a = 4

5 ( y - 3 ) = 2y + 3

5y - 15 = 2y + 3

5y - 2y = 3 + 15

3y = 18

y = 18 / 3

y = 6

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

8x - 12 = 5x + 15

8x - 5x = 15 + 12

3x = 27

x = 27 / 3

x = 9

3 ( 2y - 5 ) = 9

6x - 15 = 9

6x = 9 + 15

6x = 24

x = 24 / 6

x = 4

espero ter ajudado