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Flashback Practice
Solve each equation below.
1) 2x - 5 = 11
2) + 2 = 3
-3
)
4)*1 = 1
-1 =
525
3) 2(x - 7) = 3x + 10

Flashback Practice Solve Each Equation Below 1 2x 5 11 2 2 3 3 41 1 1 525 3 2x 7 3x 10 class=

Sagot :

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Step-by-step explanation:

We make "x" the subject of formula

2x = 11 + 5

(-5 changes to +5 because it's crossing over the equal to sign =)

2x = 16

(divide both sides by the coefficient of x)

2x ÷ 2 = 16 ÷ 2

X = 8

2. x /4 + 2 = 3

(we solve the Left Hand Side first by finding the LCM)

x/4 + 2

x + 8 = 3

‐---‐------

4

(cross multiply)

x + 8 = 4(3)

x + 8 = 12

x = 12 - 8

x = 4

3. 2(x - 7) = 3x + 10

(2 multiplies the entire bracket)

2x - 14 = 3x + 10

(collect like terms)

2x - 3x = 14 + 10

-x = 24

(multiply both sides by the negative sign "-")

x = -24

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