veronicatrejoaguiler
19.09.2021 •
Mathematics
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Ответ:
x = 10
Step-by-step explanation:
you need to set the equation to 4x + 5x = 90. Solve accordingly. Add like terms. which gets you 9x. Then divide both sides by 9, canceling out the 9 on the side of x giving you, x=10.
Ответ:
7/8
Step-by-step explanation:
look it up
your wel3