en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

8x+3y=30,5x+3y=21

Solution

8 x + 3 y = 30, 5 x + 3 y = 21

Solution

x = 3, y = 2

Solution steps

[8 x + 3 y = 30 5 x + 3 y = 21]

Isolate

x

for

8 x + 3 y = 30 : x = \frac{30 - 3 y}{8}

Substitute

x = \frac{30 - 3 y}{8}

[5 \cdot \frac{30 - 3 y}{8} + 3 y = 21]

Simplify

[\frac{150 + 9 y}{8} = 21]

Isolate

y

for

\frac{150 + 9 y}{8} = 21 : y = 2

For

x = \frac{30 - 3 y}{8}

Substitute

y = 2

x = \frac{30 - 3 \cdot 2}{8}

\frac{30 - 3 \cdot 2}{8} = 3

x = 3

The solutions to the system of equations are:

x = 3, y = 2

Popular Examples

8x+7y=10,11x=10-10y

8 x + 7 y = 10, 11 x = 10 - 10 y

2 x + 3 y = 12, x - y = 1

3y-7x=-29,7x+11y=1

3 y - 7 x = - 29, 7 x + 11 y = 1

7x+2y=31,5x+3y=30

7 x + 2 y = 31, 5 x + 3 y = 30

4x-3y+4=0,4x+3y-20=0

4 x - 3 y + 4 = 0, 4 x + 3 y - 20 = 0

Frequently Asked Questions (FAQ)

What is 8x+3y=30,5x+3y=21 ?
The solution to 8x+3y=30,5x+3y=21 is x=3,y=2