Answer:
1.3x+9=x+3
3(15)+9=x+3
25+9=21+3
34=29
2.x=21-98
x-21-98-77
x-77
3.121=3+4
121=3(60)+4
121=120+4
121=124
Step-by-step explanation:
YAN NA PO
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Answer:
1.3x+9=x+3
3(15)+9=x+3
25+9=21+3
34=29
2.x=21-98
x-21-98-77
x-77
3.121=3+4
121=3(60)+4
121=120+4
121=124
Step-by-step explanation:
YAN NA PO