The one-way ANOVA is a little different from other tests because it uses the ratio of different types to test a hypothesis. The variance should be roughly equal for the groups because the ANOVA assumes homogeneity of variance.

2(10 - 13x) + 9x = -34x + 6020 - 26x + 9x = -34x + distributive property-17x = -34x + subtraction property (subtracted 20 from both sides)17x = addition property (added 34x to both sides)x = 40/ division property (divided both sides by 17)