What is 0.4x+0.3y=1.7,0.7x-0.2y=0.8 ?

The solution to 0.4x+0.3y=1.7,0.7x-0.2y=0.8 is x=2,y=3

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0.4x+0.3y=1.7,0.7x-0.2y=0.8

0.4 x + 0.3 y = 1.7, 0.7 x - 0.2 y = 0.8

x = 2, y = 3

Solution steps

[0.4 x + 0.3 y = 1.7 0.7 x - 0.2 y = 0.8]

Isolate

x

for

0.4 x + 0.3 y = 1.7 : x = \frac{17 - 3 y}{4}

Substitute

x = \frac{17 - 3 y}{4}

[0.7 \cdot \frac{17 - 3 y}{4} - 0.2 y = 0.8]

Simplify

[2.975 - 0.725 y = 0.8]

Isolate

y

for

2.975 - 0.725 y = 0.8 : y = 3

For

x = \frac{17 - 3 y}{4}

Substitute

y = 3

x = \frac{17 - 3 \cdot 3}{4}

\frac{17 - 3 \cdot 3}{4} = 2

x = 2

The solutions to the system of equations are:

x = 2, y = 3

2 (x - 4) = 9 y + 2, x - 6 y = 0

6 x + 7 y = 9, 8 x + 9 y = 11

x + y = 50, 2 x + 4 y = 160

x + 2 y = 5, - x + y = 4

4 x + y = - 1, 5 x - 2 y = - 24

What is 0.4x+0.3y=1.7,0.7x-0.2y=0.8 ?
The solution to 0.4x+0.3y=1.7,0.7x-0.2y=0.8 is x=2,y=3