p=2
Step-by-step explanation:
7×2=14
14+3=17
4×2=8
8+9=17
they both get the same end product, meaning 7p+3=4p+9 is TRUE
*edit
19.
step-by-step explanation:
you add the 9 in the tens column since it is a single digit and 9 plus zero is 9 so it is 19
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