Question

Solve for x. (Hint: The two add together to equal a straight line)

Answer 1

Answer:

x = 25

Step-by-step explanation:

According to the hint: The two angle measures would add up to 180°.

$(5x+10)+(2x-5)=180\\\\5x+10+2x-5=180\\\\5x+2x+10-5=180\\\\7x+5=180\\\\7x+5-5=180-5\\\\7x=175\\\\\frac{7x=175}{7}\\\\\boxed{x=25}$

Hope this helps.

Answer 2

5x+10+2x-5=180

7x-5=180

    +5  +5

7x=185

7     7

x=26.4285714286

x= 26