Remove all grouping symbols and combine like terms,
a - { a - [ a- (2a - b) + 3a ]}

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.