Balanced scales and equations

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Presentation transcript:

Balanced scales and equations

Write an equation for this diagram 12 -5 t - 5 = 12 +5 +5 Now solve the equation t = 17

Write an equation for this diagram 4 9 e + 9 = 4 -9 -9 Now solve the equation e = -5

Write an equation for this diagram j j 5 -8 2j - 8 = 5 +8 +8 Now solve the equation 2j = 13 ÷2 ÷2 j = 6.5

Write an equation for this diagram b b b 6 11 2b + 6 = b + 11 -b -b Now solve the equation b + 6 = 11 -6 -6 b = 5

Write an equation for this diagram x x x x -7 3 3x – 7 = x + 3 -x -x Now solve the equation 2x – 7 = 3 +7 +7 2x = 10 x = 5

Write an equation for this diagram +3 15 m + 3 = 15 – 2m +2m +2m Now solve the equation 3m + 3 = 15 -3 -3 3m = 12 m = 4