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Alenkasestr [34]
4 years ago
6

What is the solution to the equation? 13 3/4 +x= 7 1/4

Mathematics
1 answer:
Butoxors [25]4 years ago
4 0

Answer:

x = 6\frac{1}{2}

Step-by-step explanation:

13\frac{3}{4}+x=7\frac{1}{4}

(subtract 13\frac{3}{4} from both sides)

x=6\frac{2}{4} or 6\frac{1}{2}

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Solve the following system by Elimination:
{7 x + 3 y = 22 | (equation 1)
{4 y = 20 | (equation 2)

Divide equation 2 by 4:
{7 x + 3 y = 22 | (equation 1)
{0 x+y = 5 | (equation 2)

Subtract 3 × (equation 2) from equation 1:
{7 x+0 y = 7 | (equation 1)
{0 x+y = 5 | (equation 2)

Divide equation 1 by 7:
{x+0 y = 1 | (equation 1)
{0 x+y = 5 | (equation 2)

Collect results:

Answer: {x = 1, y = 5

_____________________________________________________

Solve the following system:
{y - 2 x = 10 | (equation 1)
{4 x - y = -14 | (equation 2)

Swap equation 1 with equation 2:
{4 x - y = -14 | (equation 1)
{-(2 x) + y = 10 | (equation 2)

Add 1/2 × (equation 1) to equation 2:
{4 x - y = -14 | (equation 1)
{0 x+y/2 = 3 | (equation 2)

Multiply equation 2 by 2:
{4 x - y = -14 | (equation 1)
{0 x+y = 6 | (equation 2)

Add equation 2 to equation 1:
{4 x+0 y = -8 | (equation 1)
{0 x+y = 6 | (equation 2)

Divide equation 1 by 4:
{x+0 y = -2 | (equation 1)
{0 x+y = 6 | (equation 2)

Collect results:

Answer:  {x = -2, y = 6
4 0
4 years ago
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