Solving for Variables
3x for x = 5
3(5) = 15
20x - 10 for x=4
20(4) - 10
80 - 10 = 70
3t / 3 +7y for t=6 and y = 8
3x6 / 3 + 7x8
18/3 + 7x8
6 + 56
62
n + 28 for n = 3
3 + 28 = 31
-3c for c =-4
=3(-4)=12
3 + v for v = 13
3 + 13 = 16
22p/11 for p = 3
22(3)/11
66/11=6
9 - 3x/4v for x=4 and v=1
9 - 3x4 / 4x1
9 - 12/4
9-3
6
f - 23 for f=40
40 - 23 = 17
12 + v for v=-8
12+ -8 = 4
14 - c for c =16
14 - 16 = -2
16/k + 7 for k=8
16/8 + 7
2 + 7
9
n + 2n + m for n = 12 and m = 15
12+ 2x15 + 15
12+30+15
42+15
57
4c for c = 20
4(20)=80
-12/n + n for n = 3
-12/3 + 3
-4 + 3
-1
n/4 for n = 36
36/ 4 = 9
108 - 12j for j = 9
108 - 12(9)
108 - 108
0
7p-2t+3 for p=14 and t = 5
7x14 - 2x5 +3
98 - 10 + 3
88 +3 = 91
12b + 5 for b =17
12(17) + 5
204+5
209
110 - 12b for b=-10
110 - 12 (-10)
110- (-120)
110+120
230
100/r for r = 20
100/20 = 5
4d (d) - 3d for d = 2
4(2)(2)-3(2)
16-6
10
Q + r (s) for Q=12; r = 15; s = 0
12 + 15(0)
12+0
12
23 - j for j= 20
23-20 = 3
-5y + y - 2x for y=-9 and x = 8
-5 (-9) + -9 - 2(8)
45+-9 -16
36 - 16
20