What is 63x-5y=4,2y+7=9x ?

The solution to 63x-5y=4,2y+7=9x is x=-1/3 ,y=-5

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

63x-5y=4,2y+7=9x

63 x - 5 y = 4, 2 y + 7 = 9 x

x = - \frac{1}{3}, y = - 5

Solution steps

[63 x - 5 y = 4 2 y + 7 = 9 x]

Isolate

x

for

63 x - 5 y = 4 : x = \frac{4 + 5 y}{63}

Substitute

x = \frac{4 + 5 y}{63}

[2 y + 7 = 9 \cdot \frac{4 + 5 y}{63}]

Simplify

[2 y + 7 = \frac{4 + 5 y}{7}]

Isolate

y

for

2 y + 7 = \frac{4 + 5 y}{7} : y = - 5

For

x = \frac{4 + 5 y}{63}

Substitute

y = - 5

x = \frac{4 + 5 ( - 5 )}{63}

\frac{4 + 5 ( - 5 )}{63} = - \frac{1}{3}

x = - \frac{1}{3}

The solutions to the system of equations are:

x = - \frac{1}{3}, y = - 5

4 a + 3 b = 14, 3 a - 4 b = 23

5 x + 2 y = 850, x + 3 y = 300

3 x + y = 8, 6 x + y = 7

5 x - 2 y = 22, 3 x + y = 22

4 x + 3 y = 2, 7 x - 8 y = - 23