Question

resolva a eguação
1)x-1=8
2)x-3=7
3)y-5=12
4)y-6=6
5)x-2=-4
6)x+7=2
6)x+1=3
7)x+5=6
8)y+3=3
9)y+7=2
10)y+2=-5​

Answer 1

1)x-1=8

x=8+1

x=9

2)x-3=7

x=7+3

x=10

3)y-5=12

y=12+5

y=17

4)y-6=6

y=6+6

y=12

5)x-2=-4

x=-4-2

x=-6

6)x+7=2

x=2-7

x=-5

7)x+1=3

x=3-1

x=2

8)x+5=6

x=6-5

x=1

9)y+3=3

y=3-3

y=0

10)y+7=2

y=2-7

y=-5

11)y+2=-5

y=-5-2

y=-7

Answer 2

1)

$\sf{x - 1 = 8} \\ \sf{x = 8 + 1} \\ \boxed{\sf{x = 9}}$

2)

$\sf{x - 3 = 7} \\ \sf{x = 7 + 3} \\ \boxed{\sf{x = 10}}$

3)

$\sf{y - 5 = 12} \\ \sf{y = 12 + 5} \\ \boxed{\sf{y = 17}}$

4)

$\sf{y - 6 = 6} \\ \sf{y = 6 + 6} \\ \boxed{\sf{y = 12}}$

5)

$\sf{x - 2 = - 4} \\ \sf{x = - 4 + 2} \\ \boxed{\sf{x = - 2}}$

6)

$\sf{x + 7 = 2} \\ \sf{x = 2 - 7} \\ \boxed{\sf{x = - 5}}$

6)

$\sf{x + 1 = 3} \\ \sf{x = 3 - 1} \\\boxed{\sf{x = 2}}$

7)

$\sf{x + 5 = 6} \\ \sf{x = 6 - 5} \\ \boxed{\sf{x = 1}}$

8)

$\sf{y + 3 = 3} \\ \sf{y = 3 - 3} \\ \boxed{\sf{y = 0}}$

9)

$\sf{y + 7 = 2} \\ \sf{y = 2 - 7} \\ \boxed{\sf{y = - 5}}$

10)

$\sf{y + 2 = - 5} \\\sf{y = - 5 - 2} \\ \boxed{\sf{y = - 7}}$

Obs: você repetiu o número dos itens duas vezes, o item 6.

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