Answer:
Step-by-step explanation:
z = 3
2y + z = 1
2y + 3 = 1 {substituting z =3}
2y = 1 -3
2y = -2
y = - 2/2
y = -1
2x +3y +2z = 13
2x + 3 * (-1) + 2*3 = 13 { {substituting z =3} and y = -1}
2x -3 + 6 =13
2x + 3 = 13
2x = 13 - 3
2x= 10
x = 10/2
x = 5
I'm not sure exactly what you mean, but I'm amusing what you mean. You can multiply the smaller number by a part of the bigger number. for instance, 45x5. You can multiply 5x5 and that =25, then mulitply 40x5=200. Then add 400+25=225. So, 45x5=225.
Step-by-step explanation:
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Just read what it says not that hard go to the left twice and go up 4 units.
Hope you have a good day
