a) x+7=10
x = 10 - 7
x=3
b) 5x-3=12
5x = 12 + 3
5x = 15
x = 3
c) 4x+5=17
4x = 17 - 5
4x = 12
d) x/4 +5=7 /*4
x + 20 = 28
x = 28 - 20
x = 8
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b) 5x=15 x=3
c) 4x=12 x=3
d) x=2
a) x+7=10
x = 10 - 7
x=3
b) 5x-3=12
5x = 12 + 3
5x = 15
x = 3
c) 4x+5=17
4x = 17 - 5
4x = 12
x = 3
d) x/4 +5=7 /*4
x + 20 = 28
x = 28 - 20
x = 8