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Solve each equation mentally

Solve each equation mentally-example-1
User Dulacp
by
8.3k points

1 Answer

6 votes

Answer:

Explanation:

a) 2x = 10

Divide both side by 2

x = 10/2

x = 5

b) -3x = 21

Divide both sides by (-3)

x = 21/(-3)

x = -7


c) (1)/(3)x = 6

Multiply both sides by 3

x = 6*3

x = 18


d)(-1)/(2)x = -7

Multiply both sides by (-2)

x = -7 * (-2)

x = 14

User CthUlhUzzz
by
8.4k points

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