University:
Everett Community College
Course:
MATH 138 | Applied College Algebra
Academic year:

2009
Views:

288

Pages:

2
Author:

Bulfaro0ql

[PT 99-2] First Degree Equations Solve 1) 3x – 5 = 19 2) 7t + 6= -2 3) 8x – 9 = 13x + 21 4) 40r + 15=22r - 3 5) 7.24w - 12.3 = 0.5 + 4.84w 6) 5z – 7 = 7 - 5z 7) 4(x - 3) - 3(x - 4) = 5(x + 2) + 6 8) 4 x  9) 2x 3 5x   7 4 3 11) 3y-[5-2(y+1)]=y-7(y+2) 10) 1 2  2 3 3x  1 3  5 8 12) a(a-2)-15=a(a+5)-3(a+5) 13) 3(x + 5) = 4(x + 5) - (x + 5) 15) 14) 7z - 3(4 - z) = 5(2z) + 12 x x 5  6 3 2 16) 4(3q - 1) - 5(3q - 2) = 2(q + 3) - 5q Solve explicitly for the indicated variable. 17) 5x + 7y = 4 (for y) 18) 5x + 7y = 4 (for x) 19) 2(x - y) = 3x + 4 (for y) 20) A = (L)(W) (for W) Answers: 2)  1) 8 8 7 3) -6 4) -1 5) 16 3 6) 7 5 7) -4 11) -1 12) 0 13) all reals 20) W  A L 14) no solution 15) -21 16) all reals 17) 8) 4  5x 7 7 24 18) 9) 63 116 10) 7 24 47y x4 19)  5 2