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RoseWind [281]
2 years ago
9

Flashback Practice

Mathematics
1 answer:
VashaNatasha [74]2 years ago
4 0

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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Py+7=6y+qp, y, plus, 7, equals, 6, y, plus, q y=y=y, equals
Archy [21]

Py +7 = 6y + qp

Solve the equation for y

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Py +7 = 6y + qp

Subtract 6y from both sides

Py - 6y +7 = + qp

Subtract 7 from both sides

Py - 6y = + qp - 7

Now factor out y

(P - 6)y = qp - 7

Divide by P - 6 from both sides

y =\frac{qp - 7}{(P - 6)}

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Step-by-step explanation:

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12

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you divide 24 by 2 because it is multiplication, and the opposite is division.

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3 0
3 years ago
If avogadro's number of pennies is divided equally among the 250. million men, women, and children in the united states, how man
Anastasy [175]

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