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2X of 3 + 0.5x = 14 solve equations Clear. Five minutes
2X of 3 + 0.5x = 14
(2/3+1/2)x=14
7/6x=14
x=12
If 2x = 43 and 3 (x + a) = a-5x have the same solution, then A-1 = 1___ ．
Solve the equation 2x = 43 to get: x = 23, substitute x = 23 into 3 (x + a) = a-5x to get the equation about a: - 6A = 16 to get: a = - 83, substitute a = - 83 into A-1 to get: A-1 = - 113
How to solve 5x-20 * 5 = 2.5x + 20
5x-20*5=2.5x+20
5x-100=2.5x+20
5x-2.5x=100+20
2.5x=120
x=120÷2.5
x=48
2÷5x=20
5x=2÷20
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