Question

A. 15-0.5(4x-2)+4x=17 (show your work)

solve.
B. solve the system of equations by using the linear combination method.(show your work)
n=m+1
m=2n+2

Answer 1

Hope this helps please answer my chemistry questions

Answer 2

A) x = 1/2

B) m = -4

n = -3

Explanation:

A)

`15-0.5(4x-2)+4x=17`

Expand the brackets:

`\implies 15-2x+1+4x=17`

Collect and combine like terms:

`\implies 2x+16=17`

Subtract 16 from both sides:

`\implies 2x=1`

Divide both sides by 2:

`\implies x = \frac12`

B) Equation 1: n = m + 1

Equation 2: m = 2n + 2

Rewrite equation 1 to make m the subject:

m = n - 1

Subtract m = n - 1 from equation 2 to eliminate m:

0 = n + 3

Solve for n:

n = -3

Substitute n = -3 into either of the original equations and solve for m:

m = 2(-3) + 2

⇒ m = -4