Do you know that English mathematician who invented the equal sign (=) for equals in 1557? To find out, simplify the following expressions by matching column A with column B, then fill in the blanks below. -20+5+6+ (-4) - 4(3) +5+ (-5) + 6 8(2)+(-4) + 8 + (-10) 2[-3(4+ (-2)] 28 ÷ (-4+6) 1. 2. 3. 4. 5. 7. 6. 27+(-15)+4(-3) -10 15-4(3+8+4) R.-2 C. -10 E.-12 T, 14 D.-5 0.-7 B.-6