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2x=- 3 1/4-1 3/4
2x=-4 4/4
2x=-5/:2
x=-2,5
b) 4x - 5 = 3x - 1
4x-3x=-1+5
1x=4/:1
x=4
c) 3x + 1/7 = 2x
3x-2x=-1/7
1x=-1/7 /:1
x=-1/7
1 3/4 + 2x =-3 1/4
2x = -3 1/4 - 1 3/4
2x = 5
x = 2 1/2
b)
4x - 5 = 3x - 1
4x - 3x = -1 + 5
x = 4
c)
3x + 1/7 = 2x
3x - 2x = -1/7
x = -1/7