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Popular >

2a+b=4,-3a+b=-11

Solution

2 a + b = 4, - 3 a + b = - 11

Solution

a = 3, b = - 2

Solution steps

[2 a + b = 4 - 3 a + b = - 11]

Isolate

a

for

2 a + b = 4 : a = \frac{4 - b}{2}

Substitute

a = \frac{4 - b}{2}

[- 3 \cdot \frac{4 - b}{2} + b = - 11]

Simplify

[\frac{- 12 + 5 b}{2} = - 11]

Isolate

b

for

\frac{- 12 + 5 b}{2} = - 11 : b = - 2

For

a = \frac{4 - b}{2}

Substitute

b = - 2

a = \frac{4 - ( - 2 )}{2}

\frac{4 - ( - 2 )}{2} = 3

a = 3

The solutions to the system of equations are:

a = 3, b = - 2

Popular Examples

x+4y=14,7x-3y=5

x + 4 y = 14, 7 x - 3 y = 5

(sqrt(7))^x=49^{y-2x},2^{y-x}=1024

(7)^{x} = 4 9^{y - 2 x}, 2^{y - x} = 1024

c=-7/12 ,a=-12,p_{f(c,a)}(c,a)(c,a)=-8/11

c = - \frac{7}{12}, a = - 12, p_{f (c, a)} (c, a) (c, a) = - \frac{8}{11}

x - 6 + x = 1, 6 x = 16

2x+3y+z=0,x+y+2z=1,x-y-z=-1

2 x + 3 y + z = 0, x + y + 2 z = 1, x - y - z = - 1

Frequently Asked Questions (FAQ)

What is 2a+b=4,-3a+b=-11 ?
The solution to 2a+b=4,-3a+b=-11 is a=3,b=-2