Evaluating Expressions w/ more than 1 variable

Evaluate 2x + 3yx = 4 and y = 2 57 40 14 30 Evaluate 56 - 6tt = 6 Match the following expressions to their correct answers a = 10 b = 4 c = 5 abc 200 a + bc 30 ab - c 35 a + b - c 9 2a - 3b 8 4c 20