3х + 5(1 +7x) = 3х – 30

Mathematics

2 answers:

weqwewe [10]3 years ago

4 0

3x + (5+35x) = 3x -30
38x + 5 = 3x -30
38x = 3x -35
35x = -35
x = -1

satela [25.4K]3 years ago

4 0

Answer:-1

Step-by-step explanation:

3x+5(1+7x)=3x-30

Open bracket

3x+5+35x=3x-302

Collect like terms

3x+35x-3x=-30-5

35x=-35

Divide both sides by 35

35x÷35=-35÷35

X=-1

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5 0

3 years ago

The length of the base of an isosceles triangle is x. The length of a leg is 2x-6. The perimeter of the triangle is 38. Find X

Norma-Jean [14]

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x = 10

Step-by-step explanation:

Perimeter of a triangle = the sum of the three sides.

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