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100
Solve: x + 4 = 10
x = 6
100
Solve: 4x + 7 = 23
x = 4
100
Solve: 2x - 9 + 5x = 5
x = 2
100

Solve: n/3 - 10 = -12

x = -6

100

Solve: -(-2r + 6) = 0

r=3

200
Solve: y - 3 = -5
y = -2
200
Solve: y/3 - 4 = -2
y = 6
200
Solve: 8 - 2y +7 -4y = 3
y = 2
200

Solve: (x+5)/-4 = -4

x = 11

200

Solve: 12 - (x + 4) = 10

x=-2

300
Solve: 8m = -48
m = -6
300
Solve: 5r + (-9) = -4
r = 1
300
Solve: 2(3x - 4) = 10
x = 3
300

Solve: (3+r)/2 + 4 = 11

r=11

300

Solve: (2/5)x = 3

x = 15/2 or 7 1/2

400
Solve: r/5 = -9
r = -45
400
Solve: (a + 7)/3 = -2
a = -13
400
Solve: -5(2x + 8) -3 = -33
x = -1
400

Solve: 1/2(6y - 8) = 17

y=7

400

Solve: (4/5)m -3 = 9

m = 15

500
Solve: -8 + x = -12
x = -4
500
Solve: -6 - x = 10
x = -16
500
Solve: 9y - 3(2y + 7) = 21
y = 14
500

Solve: 2/3(x - 5) = -12

x=-13

500

Solve: 6-2(y+2) = 14

y=-6