3)21 = m + 6 4) 4 = x − 9 4) 4) 4 = x − 9

5) b − 17 = −16 6) −4 = x − 17

Plz help

Explanation:

Switch sides:

m + 6 = 21

Subtract 6 from both sides:

m + 6 - 6 = 21 - 6

Simplify:

Switch sides

x - 9 = 4

Add 9 to each side:

x - 9 + 9 = 4 + 9

Simplify:

Add 17 to each side:

b - 17 + 17 = -16 + 17

Simplify:

Switch sides:

x - 17 = -4

Add 17 to each side:

x - 17 + 17 = -4 + 17

Simplify:

- PNW

60.9774

step-by-step explanation:

because when you add 47.6 plus 7.32 equals 54.92

and when you add .0574 + 6= 6.0574

and when you add 54.92 and 6.0574 you get the answer of 60.9774.

plzz mark brainlest last one got deleted. cause i didn't explain it but i did but i understand what the mod meant