Solving equations Y7

A

100

Solve:

x+8=17

x=9

200

Solve:

s + 7 = -14

s = -21

300

Solve:

4s + 13 = 23

s = 2.5

400

Solve:

3x² + 12 = 60

x = 4

500

3x² + 50 = 5x² 

x = 5

B

100

Solve:

y - 5 = 18

y = 23

200

Solve:

2t +7 = 17

t = 5

300

Solve:

5q + 24 = -12

q = -7.2

400

Solve:
10q - 24 = -10q + 46

q = 3.5

500

17f + 3f - 12 = 15f + 11

f = 4.6

C

100

Solve:

f - 4 = 27

f = 31

200

Solve:

3f - 12 = 24

f = 12

300

Solve:

-2t - 17 = 31

t = -24

400

Solve:
5h - 24  = 7 + 3h

h = 15.5

500

3g + 11 - 8g = 7g - 25

g = 3

D

100

Solve:

q + 4 = -2

q = -6

200

Solve:

h + 28 = -53

h = -81

300

Solve: 

4u + 7 = 11 + 2u

u = 2

400

Solve:
16m - 2.3 = 6m + 4.5

m = 0.68

500

84k - 24 = 71k - 128

k = -8

E

100

Solve:

r - 11 = -5

r = 6

200

Solve:

4z = 16 - 24

z = -2

300

Solve:

3 + 8k = -12 + 3k

k = -3

400

Solve:
3n + 4 = -6n - 77

n = -9

500

4p²+ 7 = 2p² + 25

p = 3