Circle the step where the error has occurred. explain why it is an error. given 2(10 − 13x) + 9x = −34x + 60 step 1: distribute 20 − 26x + 9x = −34x + 60 step 2: combine like terms 20 − 17x = −34x + 60 step 3: subtraction property of equality −17x = −34x + 40 step 4: addition property of equality −51x = 40 step 5: division property of equality = −51/40

The error is in step 4; the terms weren't added properly

The addition property of equality is used. We add 34x to both sides to go from this

-17x = -34x + 40

to this

17x = 40

note how the left side is not -51x. This is because 34+(-17) = 34-17 = 17; instead of -34-17 = -51.

After we get to 17x = 40, we divide both sides by 17 to get x = 40/17

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step-by-step explanation:

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your answer would be 12