Question

What is the solution to?

Answer 1

Answer:

(2, -2)

Step-by-step explanation:

Solve 7x - 2y = 18 for x:

• $7x - 2y = 18$
• $7x - 2y + 2y = 18 + 2y$ (Add 2y to both sides)
• $7x = 2y + 18$
• $\frac{7x}{7} = \frac{2y+18}{7}$ (Divide both sides by 7)
• $x = \frac{2}{7}y+\frac{18}{7}$

Substitute 2/7y+ 18/7 for x in -4x + 3y = -14

• $-4x + 3y = -14$
• $-4(\frac{2}{7}y+\frac{18}{7})+3y=-14$
• $\frac{13}{7}y-\frac{72}{7}=-14$ (Simplify both sides of the equation)
• $\frac{13}{7}y-\frac{72}{7}+\frac{72}{7} =-14+ \frac{72}{7}$ (Add 72/7 to both sides)
• $\frac{13}{7}y=\frac{-26}{7}$
• $\frac{13}{7}y*\frac{7}{13}=\frac{-26}{7} * \frac{7}{13}$
• $y = -2$

Substitute -2 for y in x = 2/7y + 18/7

• $x = \frac{2}{7}y + \frac{18}{7}$
• $x = \frac{2}{7}(-2) + \frac{18}{7}$
• $x = 2$ (Simplify both sides of the equation)

Given that x = 2 and y = -2, the point is: (2, -2)

Therefore, the solution is (2, -2).

Answer 2

2,-2 because X =2 and y=-2 so therefore 2,-2