Is the given number the solution of the equation

2) -7r - 15 = -2r; -3

Plug -3 for r.

-7(-3) - 15 = -2(-3)

6 = 6

The answer for #2 is yes.

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4) -3p = 4p + 35; -5

Plug -4 for p.

-3(-5) = 4(-5) + 35

15 = 15

The answer for #4 is yes.

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6) 5 - 15s = 8 - 16s; 3

Plug 3 for s.

5 - 15(3) = 8 - 16(3)

-40 = -40

The answer for #6 is yes.

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8) 6a + 3 = 3(3a - 2); 4

Plug 4 for a.

6(4) + 3 = 3(3*4 - 2)

27 = 30

The answer for #8 is no.

i think 1: 2

step-by-step explanation:

m∠cdf = 43° , m∠gdf = 114°, m∠gde = 23°, m∠edh = 23° , m∠cdh = 157°

step-by-step explanation:

since, it is given that de bisects the angle gdh ⇒ de divides the angle gdh into two equal angles.

⇒ m∠gde = m∠edh

⇒ 8·x   - 1 = 6·x + 5

⇒ x = 3

so, m∠gde = 8·x - 1 = 23°

and m∠edh = 23°

now, it is given ∠cde is an straight angle so, m∠cde = 180°

⇒ m∠cdf + m∠fdg + m∠gde = 180°

⇒ 43° + m∠fdg + 23° = 180°

⇒ m∠fdg = 114°

again, m∠cde = m∠cdh + m∠edh = 180°

m∠cdh + 23° = 180°

⇒ m∠cdh = 157°