Year 1 Lesson 23 Homework

2). (2 points each) Combine the X's and solve these equations: (I will combine the terms in the first problem for you!)

a).

b). X + X = 18

__________

X = _______

c). X + 2X = 9

__________

X = _______

d). X + X + X = 18

__________

X = _______

e). 3X - 2X = 15

__________

X = _______

f). 5X + 2X + 2X = 81

__________

X = _______

g). X + 5 - 3 = 10

__________

X = _______

h). 2X² - X² = 81

__________

X = _______

i). 3X + X + 2X + 5 = 41

__________

X = _______

3). (2 points each) Find X for each of these perimeter problems. First write down the equation for the perimeter, then solve it. I will write the first equation for you.

a). The perimeter is 36 inches.
Equation:

2X+X+2X+X=36

X = _______
b). The perimeter is 64 feet.
Equation:

________________

X = _______
c). The perimeter is 100 inches
Equation:

________________

X = _______
d). The perimeter is 144 feet
Equation:

________________

X = _______

a).	b). X + X = 18 __________ X = _______	c). X + 2X = 9 __________ X = _______
d). X + X + X = 18 __________ X = _______	e). 3X - 2X = 15 __________ X = _______	f). 5X + 2X + 2X = 81 __________ X = _______
g). X + 5 - 3 = 10 __________ X = _______	h). 2X² - X² = 81 __________ X = _______	i). 3X + X + 2X + 5 = 41 __________ X = _______

a). The perimeter is 36 inches.	Equation: 2X+X+2X+X=36 X = _______	b). The perimeter is 64 feet.	Equation: ________________ X = _______
c). The perimeter is 100 inches	Equation: ________________ X = _______	d). The perimeter is 144 feet	Equation: ________________ X = _______