Question

Me ajudem por favor! Resolva: 1. 30-x+4
2. 12t-6=16-54+35


3. 7t-5=2t-12


4. 12-x+4-6x=24



5. 5z-3=-12+9z+23



6. 10X-15=3X-18



7. 15F-2+5F=15+2F

Answer 1

Resposta:

1) -x+34

2) 12t-6=16-54+35

=12t=16-19+6

=12t=9

t=9/12=3/4

3) 7t-5=2t-12

7t-2t=12+5

5t=17

t=17/5

4) 12-x+4-6x=24

-7x=24-12-4

-7x=12-4

-7x=8

x=8/-7= -8/7

5) 5z-3= -12+9z+23

5z-9z= 11+3

-4z=14

z=14/-4

z=7/-2

6). 10x-15=3x-18

10x-3x= -18+15

7x= - 3

x= -3/7

7). 15F-2+5F=15+2F

20F-2F=15+2

18F=17

F=17/18

Espero ter ajudado