Question

Help please its about angles

Answer 1

we will use the same method and knowledge from before

a straight line forms the angle 180°, so we know that both angles will add up to 180°
We can use this knowledge to have that

3x+18 + 4x+15 = 180

We then simplify

7x + 33 = 180

7x = 147

x = 21

Answer 2

Hey there!

3x + 18 + 4x + 15 = 180°

COMBINE the LIKE TERMS

(3x + 4x) + (18 + 15) = 180°

3x + 4x + 18 + 15 = 180°

7x + 33 = 180°

SUBTRACT 33 to BOTH SIDES

7x + 33 - 33 = 180 - 33

CANCEL out: 33 - 33 because it give you 0

KEEP: 180 - 33 because it help solve for the x-value

NEW EQUATION: 7x = 147

DIVIDE 7 to BOTH SIDES

7x/7 = 147/7

CANCEL out: 7/7 because it gives you 1

KEEP: 147/7 because it help solve for the x-value

NEW EQUATION: x = 147/7

SIMPLIFY IT!

x = 21

Therefore, your overall answer is: x = 21

Good luck on your assignment & enjoy your day!

~Amphitrite1040:)