equation
equations
equations
equations
100

6r + 7 = 13 + 7r

{−6}

100

n + 2 = −14 − n

{−8}

100

−8n + 4(1 + 5n) = −6n − 14

{−1}

100

38 + 7k = 8(k + 4)

{6}

200

−7x − 3x + 2 = −8x − 8

{5}

200

7a − 3 = 3 + 6a

{6}

200

−6n − 20 = −2n + 4(1 − 3n)

{3}

200

8x + 4(4x − 3) = 4(6x + 4) − 4

all real numbers

300

−14 + 6b + 7 − 2b = 1 + 5b

{−8}

300

n − 3n = 14 − 4n

{7}

300

4n − 40 = 7(−2n + 2) 

{3}

300

3(1 − 3x) = 2(−4x + 7)

{−11}

400

13 − 4x = 1 − x

{4}

400

5 + 2x = 2x + 6

No solution.

400

7(5a − 4) − 1 = 14 − 8a

{1}

400

4(−8x + 5) = −32x − 26

No solution

500

−8 − x = x − 4x

{4}

500

−10 + x + 4 − 5 = 7x − 5

{−1}

500

−31 − 4x = −5 − 5(1 + 5x)

{1}

500

−3(x − 1) + 8(x − 3) = 6x + 7 − 5x

{7}

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