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4 years ago

Solve a) 2(x+3)=x-4 b) 4(5x-2)=2(9x+3)

Mathematics

2 answers:

AVprozaik [17]4 years ago

6 0

Answer:

$x = - 10 \\ x = 7$

$2x + 6 = x - 4 \\ 2x + 6 - x = - 4 \\ x + 6 = - 4 \\ x = - 4 - 6 \\ x = - 10 \\ \\ \\ 20x - 8 = 2(9x + 3) \\ 20x - 8 = 18x + 6 \\ 20x - 8 - 18x = 6 \\ 2x - 8 = 6 \\ 2x = 6 + 8 \\ 2x = 14 \\ x = \frac{14}{2} x = 7$

Nat2105 [25]4 years ago

5 0

Answer:

a) -10 b) 7

Step-by-step explanation:

a) 2(x+ 3) = x - 4

2x + 6 = x - 4

2x - x = -6 - 4

x = -10

b) 4(5x - 2) = 2(9x + 3)

20x - 8 = 18x + 6

20x - 18x = 6 + 8

2x = 14

x = 14/2

x = 7

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