Simplify the expression
4+ (5 + x)

Three times the difference of federico’s age, and 4, increased by 7, is greater than 37. what are possible values of federico’s age?

Clara solved the equation 7/3x = −2/3 as shown → 7/3x( 3/7 ) = −2/3 ( 3/7 ) x = −14 what is clara’s error?

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.