Question

Two step equations
can someone do these?

Answer 1

Step-by-step explanation:

7) n - 31/4 = 2

   n - 31 = 8

   n = 39

8) 1 + 2r = 35

   2r = 34

   r = 17

9) 42 + 5t = 8t

   42 = 3t

   14 = t

10) 4p - 3 = 17

     4p = 20

     p = 5

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Answer 2

$1) \: \: \frac{n - 31}{4} = 2$

$n - 31 = 8$

$n = 8 + 31$

$n = 39$

$2) \: \: 1 + 2r = 35$

$2r = 35 - 1$

$2r = 34$

$r = \frac{34}{2}$

$r = 17$

$3) \: 42 + 5t = 8t$

$42 = 8t - 5t$

$42 = 3t$

$t = \frac{3}{42}$

$t = 14$

$4) \: 4p - 3 = 17$

$4p = 17 + 3$

$4p = 20$

$p = \frac{20}{4}$

$p = 5$