Answer: 35
Step-by-step explanation: the line inside the box determines the point
Commutative property of addition
Here you have an equilateral triangle. Because of this you know that all angles are also the same as each other. We know that the angles in an equilateral triangle are 60°.
so let's set 7x + 4 = 60
Subtract 4 from both sides: 7x = 56
Divide both sides by 7: x = 8
PEMDAS
Parentheses, exponents, multiplication, division, addition, subtraction.
