w + s = 320
w = s + 6
Since w and s + 6 are equal, we can substitute one for the other.
s + 6 + s = 320
2s + 6 - 6 = 320 - 6
2s = 314
2s/2 = 314/2
s = 157
w = 157 + 6
w = 163
Mit P.
asked 10/07/18
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