Answer:
He could use y+3x=-4
Step-by-step explanation:
When we subtract 3x on both sides, we get y=-4-3x, which means we just solved a variable and can substitute into the other equation 2x-3y=-21
Answer:
0.000023456633455 is answer
Answer: the answer to you question is c
Answer: 20 cm
Step-by-step explanation:
