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Writing and Solving EquationsPowerPoint Presentation

Writing and Solving Equations

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## PowerPoint Slideshow about 'Writing and Solving Equations' - jacoba

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Write an equation and solve.

- The sum of 38 and twice a number is 124. Find the number.
38+2x=124

x = 43

- Four less than half a number is seventeen. Find the number.
.5x-4=17

x = 42

Write and solve equation.

- Find three consecutive integers whose sum is 171.
x + (x+1) + (x+2) = 171

3x+3 = 171

x = 56

- Find four consecutive integers whose sum is 246.
x + (x+1) + (x+2) + (x+3) = 246

4x + 6 = 246

x = 60

Write and solve equation.

- Burt’s Burger Barn sold 495 hamburgers today. The number sold with cheese was half the number sold without cheese. How many of each kind were sold?
w = with cheese

o = with out cheese

w + o = 495

w = (1/2) o

.5o + o = 495

1.5 o = 495

o = 330

w = 165

Write and solve equation.

- Brian has $88 in his savings account. If he saves $3.50 per week, how long will it take him to have $200 in his account?
x = week

200 = 88 + 3.5 x

x = 32 weeks

Write and solve equation.

- The width of a rectangle is 15 cm. less than the length. The perimeter is 98 cm. Find the rectangle’s dimensions.
w = width

l = length

w = l -15

2w + 2l = 98

Write and solve equation.

- In ∆ABC, ےA is three times as large as B and also 16° larger than C. Find the measure of each angle.
A = 3B

A = 16 + C

A + B + C = 180

3B + B + (3B-16) = 180

7B -16 = 180

B = 28

A = 84

C = 68

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